/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/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 13:29:51,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 13:29:51,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 13:29:51,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 13:29:51,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 13:29:51,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 13:29:51,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 13:29:51,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 13:29:51,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 13:29:51,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 13:29:51,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 13:29:51,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 13:29:51,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 13:29:51,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 13:29:51,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 13:29:51,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 13:29:51,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 13:29:51,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 13:29:51,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 13:29:51,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 13:29:51,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 13:29:51,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 13:29:51,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 13:29:51,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 13:29:51,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 13:29:51,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 13:29:51,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 13:29:51,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 13:29:51,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 13:29:51,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 13:29:51,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 13:29:51,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 13:29:51,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 13:29:51,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 13:29:51,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 13:29:51,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 13:29:51,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 13:29:51,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 13:29:51,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 13:29:51,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 13:29:51,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 13:29:51,745 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 13:29:51,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 13:29:51,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 13:29:51,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 13:29:51,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 13:29:51,773 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 13:29:51,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 13:29:51,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 13:29:51,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 13:29:51,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 13:29:51,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 13:29:51,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 13:29:51,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 13:29:51,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 13:29:51,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 13:29:51,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 13:29:51,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 13:29:51,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 13:29:51,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 13:29:51,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 13:29:51,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 13:29:51,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 13:29:51,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 13:29:51,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 13:29:51,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 13:29:51,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 13:29:51,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 13:29:51,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 13:29:51,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 13:29:51,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 13:29:52,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 13:29:52,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 13:29:52,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 13:29:52,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 13:29:52,240 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 13:29:52,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2020-11-09 13:29:52,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04cc127a7/13c3fd75b9674eb386f192c6acc05f3d/FLAGad61e12eb [2020-11-09 13:29:53,172 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 13:29:53,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2020-11-09 13:29:53,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04cc127a7/13c3fd75b9674eb386f192c6acc05f3d/FLAGad61e12eb [2020-11-09 13:29:53,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04cc127a7/13c3fd75b9674eb386f192c6acc05f3d [2020-11-09 13:29:53,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 13:29:53,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 13:29:53,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 13:29:53,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 13:29:53,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 13:29:53,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:53,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62af593a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53, skipping insertion in model container [2020-11-09 13:29:53,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:53,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 13:29:53,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 13:29:53,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:29:53,815 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 13:29:53,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:29:53,992 INFO L208 MainTranslator]: Completed translation [2020-11-09 13:29:53,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53 WrapperNode [2020-11-09 13:29:53,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 13:29:53,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 13:29:53,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 13:29:53,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 13:29:54,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 13:29:54,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 13:29:54,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 13:29:54,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 13:29:54,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (1/1) ... [2020-11-09 13:29:54,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 13:29:54,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 13:29:54,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 13:29:54,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 13:29:54,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (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 13:29:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-09 13:29:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-09 13:29:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-09 13:29:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-09 13:29:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 13:29:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 13:29:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 13:29:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 13:29:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 13:29:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 13:29:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 13:29:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 13:29:54,175 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 13:29:54,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 13:29:54,637 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-09 13:29:54,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:29:54 BoogieIcfgContainer [2020-11-09 13:29:54,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 13:29:54,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 13:29:54,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 13:29:54,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 13:29:54,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:29:53" (1/3) ... [2020-11-09 13:29:54,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b5f60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:29:54, skipping insertion in model container [2020-11-09 13:29:54,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:29:53" (2/3) ... [2020-11-09 13:29:54,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b5f60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:29:54, skipping insertion in model container [2020-11-09 13:29:54,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:29:54" (3/3) ... [2020-11-09 13:29:54,649 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2020-11-09 13:29:54,666 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 13:29:54,666 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 13:29:54,671 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 13:29:54,672 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 13:29:54,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,712 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,713 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,713 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,713 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,713 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,715 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,715 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,715 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,715 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,715 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,717 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,717 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,718 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,718 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,721 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,721 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,721 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,721 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,722 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,722 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:29:54,731 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 13:29:54,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 13:29:54,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 13:29:54,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 13:29:54,770 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 13:29:54,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 13:29:54,770 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 13:29:54,770 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 13:29:54,770 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 13:29:54,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 13:29:54,783 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 13:29:54,784 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 13:29:54,787 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 13:29:54,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow [2020-11-09 13:29:54,841 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2020-11-09 13:29:54,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 13:29:54,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 6/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-09 13:29:54,854 INFO L116 LiptonReduction]: Number of co-enabled transitions 1144 [2020-11-09 13:29:55,654 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-09 13:29:56,585 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 13:29:56,745 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 13:29:57,462 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 13:29:57,801 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 13:29:58,310 WARN L194 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 13:29:58,465 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 13:29:58,754 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 13:29:58,917 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 13:29:58,956 INFO L131 LiptonReduction]: Checked pairs total: 1187 [2020-11-09 13:29:58,957 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-11-09 13:29:58,964 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-11-09 13:29:58,975 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 13:29:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 13:29:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 13:29:58,983 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:58,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 13:29:58,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times [2020-11-09 13:29:59,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:59,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435525205] [2020-11-09 13:29:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:59,222 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 13:29:59,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435525205] [2020-11-09 13:29:59,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:29:59,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 13:29:59,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521478240] [2020-11-09 13:29:59,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 13:29:59,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:59,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 13:29:59,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 13:29:59,248 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-09 13:29:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:59,313 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-11-09 13:29:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 13:29:59,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-09 13:29:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:59,327 INFO L225 Difference]: With dead ends: 75 [2020-11-09 13:29:59,327 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 13:29:59,329 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 13:29:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 13:29:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 13:29:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 13:29:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-11-09 13:29:59,374 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-11-09 13:29:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:59,374 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-11-09 13:29:59,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 13:29:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-11-09 13:29:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 13:29:59,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:59,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:59,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 13:29:59,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:59,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times [2020-11-09 13:29:59,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:59,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240005445] [2020-11-09 13:29:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:59,502 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 13:29:59,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240005445] [2020-11-09 13:29:59,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:29:59,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:29:59,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067814522] [2020-11-09 13:29:59,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 13:29:59,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:59,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 13:29:59,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:29:59,507 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-11-09 13:29:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:59,539 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-11-09 13:29:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 13:29:59,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 13:29:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:59,542 INFO L225 Difference]: With dead ends: 56 [2020-11-09 13:29:59,542 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 13:29:59,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:29:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 13:29:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-09 13:29:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 13:29:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-11-09 13:29:59,551 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-11-09 13:29:59,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:59,552 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-11-09 13:29:59,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 13:29:59,552 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-11-09 13:29:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:29:59,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:59,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:59,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 13:29:59,554 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times [2020-11-09 13:29:59,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:59,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85465028] [2020-11-09 13:29:59,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:59,646 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 13:29:59,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85465028] [2020-11-09 13:29:59,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:29:59,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:29:59,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936333304] [2020-11-09 13:29:59,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:29:59,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:29:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:29:59,650 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 6 states. [2020-11-09 13:29:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:59,741 INFO L93 Difference]: Finished difference Result 54 states and 124 transitions. [2020-11-09 13:29:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:29:59,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:29:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:59,743 INFO L225 Difference]: With dead ends: 54 [2020-11-09 13:29:59,743 INFO L226 Difference]: Without dead ends: 47 [2020-11-09 13:29:59,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:29:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-09 13:29:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-09 13:29:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 13:29:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 106 transitions. [2020-11-09 13:29:59,751 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 106 transitions. Word has length 10 [2020-11-09 13:29:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:59,751 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 106 transitions. [2020-11-09 13:29:59,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:29:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 106 transitions. [2020-11-09 13:29:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:29:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:59,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:59,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 13:29:59,753 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:59,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2101929440, now seen corresponding path program 2 times [2020-11-09 13:29:59,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:59,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417129669] [2020-11-09 13:29:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:59,863 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 13:29:59,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417129669] [2020-11-09 13:29:59,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:29:59,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:29:59,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523292883] [2020-11-09 13:29:59,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:29:59,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:29:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:29:59,867 INFO L87 Difference]: Start difference. First operand 45 states and 106 transitions. Second operand 6 states. [2020-11-09 13:29:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:59,989 INFO L93 Difference]: Finished difference Result 59 states and 138 transitions. [2020-11-09 13:29:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:29:59,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:29:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:59,997 INFO L225 Difference]: With dead ends: 59 [2020-11-09 13:29:59,997 INFO L226 Difference]: Without dead ends: 53 [2020-11-09 13:29:59,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:29:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-09 13:30:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-11-09 13:30:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 13:30:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 96 transitions. [2020-11-09 13:30:00,007 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 96 transitions. Word has length 10 [2020-11-09 13:30:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:00,007 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 96 transitions. [2020-11-09 13:30:00,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:30:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 96 transitions. [2020-11-09 13:30:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:30:00,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:00,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:00,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 13:30:00,011 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 3 times [2020-11-09 13:30:00,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:00,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037453426] [2020-11-09 13:30:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:00,136 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 13:30:00,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037453426] [2020-11-09 13:30:00,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:30:00,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:30:00,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842249890] [2020-11-09 13:30:00,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:30:00,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:00,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:30:00,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:30:00,141 INFO L87 Difference]: Start difference. First operand 41 states and 96 transitions. Second operand 6 states. [2020-11-09 13:30:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:00,221 INFO L93 Difference]: Finished difference Result 65 states and 152 transitions. [2020-11-09 13:30:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:30:00,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:30:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:00,224 INFO L225 Difference]: With dead ends: 65 [2020-11-09 13:30:00,224 INFO L226 Difference]: Without dead ends: 52 [2020-11-09 13:30:00,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:30:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-09 13:30:00,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-11-09 13:30:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 13:30:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 99 transitions. [2020-11-09 13:30:00,237 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 99 transitions. Word has length 10 [2020-11-09 13:30:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:00,239 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 99 transitions. [2020-11-09 13:30:00,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:30:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 99 transitions. [2020-11-09 13:30:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:30:00,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:00,241 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:00,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 13:30:00,242 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:00,242 INFO L82 PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 4 times [2020-11-09 13:30:00,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:00,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130813552] [2020-11-09 13:30:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:00,347 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 13:30:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130813552] [2020-11-09 13:30:00,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994293180] [2020-11-09 13:30:00,348 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 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 13:30:00,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:30:00,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:00,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 13:30:00,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:00,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:30:00,708 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 13:30:00,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:00,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 13:30:00,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874426894] [2020-11-09 13:30:00,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 13:30:00,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:00,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 13:30:00,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:30:00,715 INFO L87 Difference]: Start difference. First operand 41 states and 99 transitions. Second operand 8 states. [2020-11-09 13:30:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:00,928 INFO L93 Difference]: Finished difference Result 63 states and 147 transitions. [2020-11-09 13:30:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:30:00,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-09 13:30:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:00,930 INFO L225 Difference]: With dead ends: 63 [2020-11-09 13:30:00,930 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 13:30:00,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:30:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 13:30:00,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2020-11-09 13:30:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 13:30:00,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions. [2020-11-09 13:30:00,936 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11 [2020-11-09 13:30:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:00,936 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 87 transitions. [2020-11-09 13:30:00,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 13:30:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions. [2020-11-09 13:30:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:30:00,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:00,938 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:01,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-09 13:30:01,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 5 times [2020-11-09 13:30:01,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:01,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410101585] [2020-11-09 13:30:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:01,241 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 13:30:01,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410101585] [2020-11-09 13:30:01,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135252405] [2020-11-09 13:30:01,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:01,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:30:01,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:01,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 13:30:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:01,361 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:01,373 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 13:30:01,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:01,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 13:30:01,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250340959] [2020-11-09 13:30:01,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 13:30:01,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:01,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 13:30:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:30:01,376 INFO L87 Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 8 states. [2020-11-09 13:30:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:01,505 INFO L93 Difference]: Finished difference Result 56 states and 133 transitions. [2020-11-09 13:30:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 13:30:01,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-09 13:30:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:01,506 INFO L225 Difference]: With dead ends: 56 [2020-11-09 13:30:01,506 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 13:30:01,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:30:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 13:30:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-11-09 13:30:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-09 13:30:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2020-11-09 13:30:01,512 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11 [2020-11-09 13:30:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:01,512 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions. [2020-11-09 13:30:01,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 13:30:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions. [2020-11-09 13:30:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:30:01,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:01,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:01,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:01,724 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 6 times [2020-11-09 13:30:01,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:01,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431580145] [2020-11-09 13:30:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:01,833 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 13:30:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431580145] [2020-11-09 13:30:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876427159] [2020-11-09 13:30:01,834 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 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 13:30:01,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 13:30:01,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:30:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:01,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:01,937 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 13:30:01,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:01,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-09 13:30:01,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907525070] [2020-11-09 13:30:01,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 13:30:01,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 13:30:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:30:01,940 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 8 states. [2020-11-09 13:30:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:02,086 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-11-09 13:30:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:30:02,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-09 13:30:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:02,087 INFO L225 Difference]: With dead ends: 56 [2020-11-09 13:30:02,088 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 13:30:02,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:30:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 13:30:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-11-09 13:30:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 13:30:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-11-09 13:30:02,093 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 12 [2020-11-09 13:30:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:02,093 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-11-09 13:30:02,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 13:30:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-11-09 13:30:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:30:02,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:02,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:02,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:02,306 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 7 times [2020-11-09 13:30:02,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:02,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615035607] [2020-11-09 13:30:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:02,377 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 13:30:02,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615035607] [2020-11-09 13:30:02,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083443227] [2020-11-09 13:30:02,378 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 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 13:30:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:30:02,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:02,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:02,507 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 13:30:02,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:02,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 13:30:02,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27593159] [2020-11-09 13:30:02,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 13:30:02,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:02,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 13:30:02,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:30:02,509 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 9 states. [2020-11-09 13:30:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:02,714 INFO L93 Difference]: Finished difference Result 63 states and 149 transitions. [2020-11-09 13:30:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 13:30:02,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 13:30:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:02,717 INFO L225 Difference]: With dead ends: 63 [2020-11-09 13:30:02,717 INFO L226 Difference]: Without dead ends: 58 [2020-11-09 13:30:02,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-11-09 13:30:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-09 13:30:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-11-09 13:30:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 13:30:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-11-09 13:30:02,725 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 12 [2020-11-09 13:30:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:02,726 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-11-09 13:30:02,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 13:30:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-11-09 13:30:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:30:02,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:02,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:02,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:02,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:02,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:02,930 INFO L82 PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 8 times [2020-11-09 13:30:02,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:02,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301621949] [2020-11-09 13:30:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:03,030 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 13:30:03,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301621949] [2020-11-09 13:30:03,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103775645] [2020-11-09 13:30:03,031 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 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 13:30:03,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:30:03,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:03,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:30:03,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:03,157 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 13:30:03,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:03,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 13:30:03,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377110361] [2020-11-09 13:30:03,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 13:30:03,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:03,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 13:30:03,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:30:03,161 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states. [2020-11-09 13:30:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:03,401 INFO L93 Difference]: Finished difference Result 71 states and 167 transitions. [2020-11-09 13:30:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:30:03,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 13:30:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:03,403 INFO L225 Difference]: With dead ends: 71 [2020-11-09 13:30:03,403 INFO L226 Difference]: Without dead ends: 62 [2020-11-09 13:30:03,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-11-09 13:30:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-09 13:30:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-11-09 13:30:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 13:30:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 115 transitions. [2020-11-09 13:30:03,418 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 115 transitions. Word has length 12 [2020-11-09 13:30:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:03,419 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 115 transitions. [2020-11-09 13:30:03,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 13:30:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 115 transitions. [2020-11-09 13:30:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:30:03,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:03,420 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:03,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-09 13:30:03,634 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 9 times [2020-11-09 13:30:03,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:03,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272099700] [2020-11-09 13:30:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:03,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272099700] [2020-11-09 13:30:03,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248028579] [2020-11-09 13:30:03,727 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 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 13:30:03,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 13:30:03,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:03,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:30:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:03,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:03,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 13:30:03,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400910023] [2020-11-09 13:30:03,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 13:30:03,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:03,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 13:30:03,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-09 13:30:03,848 INFO L87 Difference]: Start difference. First operand 47 states and 115 transitions. Second operand 10 states. [2020-11-09 13:30:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:04,221 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-11-09 13:30:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:30:04,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-09 13:30:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:04,224 INFO L225 Difference]: With dead ends: 72 [2020-11-09 13:30:04,224 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 13:30:04,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-11-09 13:30:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 13:30:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-11-09 13:30:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 13:30:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-11-09 13:30:04,232 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13 [2020-11-09 13:30:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:04,232 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-11-09 13:30:04,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 13:30:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-11-09 13:30:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:30:04,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:04,237 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:04,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:04,450 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 10 times [2020-11-09 13:30:04,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:04,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556404323] [2020-11-09 13:30:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:04,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556404323] [2020-11-09 13:30:04,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686563336] [2020-11-09 13:30:04,563 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 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 13:30:04,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:30:04,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:04,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:30:04,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:04,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:04,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:04,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 13:30:04,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495448572] [2020-11-09 13:30:04,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 13:30:04,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:04,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 13:30:04,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-09 13:30:04,690 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 10 states. [2020-11-09 13:30:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:04,947 INFO L93 Difference]: Finished difference Result 64 states and 153 transitions. [2020-11-09 13:30:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 13:30:04,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-09 13:30:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:04,948 INFO L225 Difference]: With dead ends: 64 [2020-11-09 13:30:04,949 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 13:30:04,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-11-09 13:30:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 13:30:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2020-11-09 13:30:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 13:30:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions. [2020-11-09 13:30:04,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13 [2020-11-09 13:30:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:04,954 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions. [2020-11-09 13:30:04,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 13:30:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions. [2020-11-09 13:30:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 13:30:04,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:04,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:05,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:05,166 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 11 times [2020-11-09 13:30:05,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:05,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387495230] [2020-11-09 13:30:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:05,298 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 13:30:05,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387495230] [2020-11-09 13:30:05,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932378764] [2020-11-09 13:30:05,300 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 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 13:30:05,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 13:30:05,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:05,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 13:30:05,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:05,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:05,389 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 13:30:05,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:05,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-09 13:30:05,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453965542] [2020-11-09 13:30:05,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 13:30:05,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:05,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 13:30:05,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-09 13:30:05,391 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 10 states. [2020-11-09 13:30:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:05,598 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-11-09 13:30:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:30:05,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-09 13:30:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:05,601 INFO L225 Difference]: With dead ends: 64 [2020-11-09 13:30:05,602 INFO L226 Difference]: Without dead ends: 58 [2020-11-09 13:30:05,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-11-09 13:30:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-09 13:30:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-11-09 13:30:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-09 13:30:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2020-11-09 13:30:05,606 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 14 [2020-11-09 13:30:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:05,606 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2020-11-09 13:30:05,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 13:30:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2020-11-09 13:30:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 13:30:05,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:05,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:05,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-09 13:30:05,818 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 12 times [2020-11-09 13:30:05,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:05,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317594223] [2020-11-09 13:30:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:05,915 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 13:30:05,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317594223] [2020-11-09 13:30:05,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311516958] [2020-11-09 13:30:05,916 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 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 13:30:05,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-09 13:30:05,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:05,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:30:05,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:06,014 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:06,032 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 13:30:06,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:06,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 13:30:06,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407889224] [2020-11-09 13:30:06,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:30:06,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:06,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:30:06,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:30:06,035 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand 11 states. [2020-11-09 13:30:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:06,429 INFO L93 Difference]: Finished difference Result 73 states and 173 transitions. [2020-11-09 13:30:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 13:30:06,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 13:30:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:06,430 INFO L225 Difference]: With dead ends: 73 [2020-11-09 13:30:06,430 INFO L226 Difference]: Without dead ends: 68 [2020-11-09 13:30:06,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552 [2020-11-09 13:30:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-09 13:30:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 45. [2020-11-09 13:30:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 13:30:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-11-09 13:30:06,435 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 14 [2020-11-09 13:30:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:06,435 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-11-09 13:30:06,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:30:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-11-09 13:30:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 13:30:06,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:06,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:06,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:06,645 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:06,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 13 times [2020-11-09 13:30:06,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:06,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585278914] [2020-11-09 13:30:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:06,728 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 13:30:06,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585278914] [2020-11-09 13:30:06,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398200145] [2020-11-09 13:30:06,729 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 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 13:30:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:06,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:30:06,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:06,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:30:06,848 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 13:30:06,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:06,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 13:30:06,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881166325] [2020-11-09 13:30:06,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:30:06,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:06,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:30:06,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:30:06,851 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states. [2020-11-09 13:30:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:07,280 INFO L93 Difference]: Finished difference Result 81 states and 191 transitions. [2020-11-09 13:30:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 13:30:07,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 13:30:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:07,281 INFO L225 Difference]: With dead ends: 81 [2020-11-09 13:30:07,281 INFO L226 Difference]: Without dead ends: 72 [2020-11-09 13:30:07,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2020-11-09 13:30:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-09 13:30:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-11-09 13:30:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-09 13:30:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 131 transitions. [2020-11-09 13:30:07,290 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 131 transitions. Word has length 14 [2020-11-09 13:30:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:07,290 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 131 transitions. [2020-11-09 13:30:07,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:30:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 131 transitions. [2020-11-09 13:30:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 13:30:07,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:07,291 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:07,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 13:30:07,499 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:07,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 14 times [2020-11-09 13:30:07,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:07,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760163187] [2020-11-09 13:30:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:07,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760163187] [2020-11-09 13:30:07,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233694431] [2020-11-09 13:30:07,622 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 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 13:30:07,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:30:07,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:07,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 13:30:07,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:07,726 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:30:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:07,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:07,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 13:30:07,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458575489] [2020-11-09 13:30:07,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 13:30:07,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 13:30:07,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-09 13:30:07,741 INFO L87 Difference]: Start difference. First operand 53 states and 131 transitions. Second operand 12 states. [2020-11-09 13:30:08,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:08,245 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-11-09 13:30:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:30:08,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-09 13:30:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:08,247 INFO L225 Difference]: With dead ends: 82 [2020-11-09 13:30:08,248 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 13:30:08,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-11-09 13:30:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 13:30:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2020-11-09 13:30:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 13:30:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-11-09 13:30:08,252 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15 [2020-11-09 13:30:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:08,253 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-11-09 13:30:08,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 13:30:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-11-09 13:30:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 13:30:08,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:08,254 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:08,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-09 13:30:08,458 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:08,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 15 times [2020-11-09 13:30:08,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:08,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371988189] [2020-11-09 13:30:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:08,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371988189] [2020-11-09 13:30:08,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43554325] [2020-11-09 13:30:08,557 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 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 13:30:08,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-09 13:30:08,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:08,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 13:30:08,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:08,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:08,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:08,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 13:30:08,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323203444] [2020-11-09 13:30:08,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 13:30:08,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:08,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 13:30:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-09 13:30:08,677 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 12 states. [2020-11-09 13:30:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:09,098 INFO L93 Difference]: Finished difference Result 72 states and 173 transitions. [2020-11-09 13:30:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 13:30:09,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-09 13:30:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:09,100 INFO L225 Difference]: With dead ends: 72 [2020-11-09 13:30:09,100 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 13:30:09,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2020-11-09 13:30:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 13:30:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-11-09 13:30:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 13:30:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions. [2020-11-09 13:30:09,104 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15 [2020-11-09 13:30:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:09,104 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions. [2020-11-09 13:30:09,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 13:30:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions. [2020-11-09 13:30:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 13:30:09,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:09,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:09,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 13:30:09,315 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 16 times [2020-11-09 13:30:09,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:09,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318321001] [2020-11-09 13:30:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318321001] [2020-11-09 13:30:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120077412] [2020-11-09 13:30:09,458 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 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 13:30:09,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:30:09,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 13:30:09,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:09,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:09,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:09,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-09 13:30:09,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331891452] [2020-11-09 13:30:09,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 13:30:09,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 13:30:09,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-09 13:30:09,548 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 12 states. [2020-11-09 13:30:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:09,782 INFO L93 Difference]: Finished difference Result 72 states and 171 transitions. [2020-11-09 13:30:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 13:30:09,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-11-09 13:30:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:09,784 INFO L225 Difference]: With dead ends: 72 [2020-11-09 13:30:09,784 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 13:30:09,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2020-11-09 13:30:09,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 13:30:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-11-09 13:30:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-09 13:30:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 143 transitions. [2020-11-09 13:30:09,789 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 143 transitions. Word has length 16 [2020-11-09 13:30:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:09,789 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 143 transitions. [2020-11-09 13:30:09,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 13:30:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 143 transitions. [2020-11-09 13:30:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 13:30:09,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:09,790 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:10,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-09 13:30:10,002 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 17 times [2020-11-09 13:30:10,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:10,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044637015] [2020-11-09 13:30:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:10,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044637015] [2020-11-09 13:30:10,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119947015] [2020-11-09 13:30:10,121 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 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 13:30:10,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-09 13:30:10,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:10,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 13:30:10,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:10,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:30:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:10,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:10,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 13:30:10,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925955963] [2020-11-09 13:30:10,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:30:10,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:10,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:30:10,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:30:10,238 INFO L87 Difference]: Start difference. First operand 58 states and 143 transitions. Second operand 13 states. [2020-11-09 13:30:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:10,735 INFO L93 Difference]: Finished difference Result 83 states and 197 transitions. [2020-11-09 13:30:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 13:30:10,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 13:30:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:10,736 INFO L225 Difference]: With dead ends: 83 [2020-11-09 13:30:10,737 INFO L226 Difference]: Without dead ends: 78 [2020-11-09 13:30:10,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:30:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-09 13:30:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2020-11-09 13:30:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 13:30:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-11-09 13:30:10,741 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 16 [2020-11-09 13:30:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:10,742 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-11-09 13:30:10,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:30:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-11-09 13:30:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 13:30:10,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:10,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:10,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:10,955 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:10,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:10,955 INFO L82 PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 18 times [2020-11-09 13:30:10,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:10,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526613788] [2020-11-09 13:30:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:11,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526613788] [2020-11-09 13:30:11,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342790926] [2020-11-09 13:30:11,063 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 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 13:30:11,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-09 13:30:11,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:11,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 13:30:11,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:11,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:30:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:11,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:11,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 13:30:11,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358953006] [2020-11-09 13:30:11,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:30:11,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:30:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:30:11,186 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states. [2020-11-09 13:30:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:11,750 INFO L93 Difference]: Finished difference Result 91 states and 215 transitions. [2020-11-09 13:30:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-09 13:30:11,751 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 13:30:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:11,753 INFO L225 Difference]: With dead ends: 91 [2020-11-09 13:30:11,753 INFO L226 Difference]: Without dead ends: 82 [2020-11-09 13:30:11,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=589, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:30:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-09 13:30:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-11-09 13:30:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 13:30:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 147 transitions. [2020-11-09 13:30:11,757 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 147 transitions. Word has length 16 [2020-11-09 13:30:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:11,758 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 147 transitions. [2020-11-09 13:30:11,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:30:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 147 transitions. [2020-11-09 13:30:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 13:30:11,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:11,758 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:11,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:11,964 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:11,965 INFO L82 PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 19 times [2020-11-09 13:30:11,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:11,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344221274] [2020-11-09 13:30:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:12,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344221274] [2020-11-09 13:30:12,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175394941] [2020-11-09 13:30:12,082 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 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 13:30:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:12,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 13:30:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:12,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:30:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:12,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:12,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 13:30:12,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818879281] [2020-11-09 13:30:12,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 13:30:12,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:12,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 13:30:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-09 13:30:12,205 INFO L87 Difference]: Start difference. First operand 59 states and 147 transitions. Second operand 14 states. [2020-11-09 13:30:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:12,839 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-11-09 13:30:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 13:30:12,842 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-09 13:30:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:12,843 INFO L225 Difference]: With dead ends: 92 [2020-11-09 13:30:12,843 INFO L226 Difference]: Without dead ends: 83 [2020-11-09 13:30:12,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=337, Invalid=719, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 13:30:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-09 13:30:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-11-09 13:30:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 13:30:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-11-09 13:30:12,846 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17 [2020-11-09 13:30:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:12,847 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-11-09 13:30:12,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 13:30:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-11-09 13:30:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 13:30:12,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:12,849 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:13,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:30:13,060 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:13,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 20 times [2020-11-09 13:30:13,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:13,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076884058] [2020-11-09 13:30:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:30:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:13,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076884058] [2020-11-09 13:30:13,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269930925] [2020-11-09 13:30:13,176 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 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 13:30:13,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:30:13,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:30:13,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-09 13:30:13,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:30:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:30:13,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:30:13,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 13:30:13,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415754310] [2020-11-09 13:30:13,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 13:30:13,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:30:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 13:30:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-09 13:30:13,306 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 14 states. [2020-11-09 13:30:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:30:13,939 INFO L93 Difference]: Finished difference Result 80 states and 193 transitions. [2020-11-09 13:30:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-09 13:30:13,939 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-09 13:30:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:30:13,940 INFO L225 Difference]: With dead ends: 80 [2020-11-09 13:30:13,940 INFO L226 Difference]: Without dead ends: 75 [2020-11-09 13:30:13,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=322, Invalid=734, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 13:30:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-09 13:30:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-11-09 13:30:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-09 13:30:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions. [2020-11-09 13:30:13,944 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17 [2020-11-09 13:30:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:30:13,945 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions. [2020-11-09 13:30:13,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 13:30:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions. [2020-11-09 13:30:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 13:30:13,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:30:13,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:30:14,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 13:30:14,157 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:30:14,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:30:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 21 times [2020-11-09 13:30:14,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:30:14,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897551592] [2020-11-09 13:30:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:30:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 13:30:14,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 13:30:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 13:30:14,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 13:30:14,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 13:30:14,206 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 13:30:14,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-09 13:30:14,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:30:14 BasicIcfg [2020-11-09 13:30:14,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 13:30:14,262 INFO L168 Benchmark]: Toolchain (without parser) took 20880.47 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 136.7 MB in the beginning and 137.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. [2020-11-09 13:30:14,262 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 100.4 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 13:30:14,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.58 ms. Allocated memory is still 162.5 MB. Free memory was 136.1 MB in the beginning and 138.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-11-09 13:30:14,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 137.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:30:14,264 INFO L168 Benchmark]: Boogie Preprocessor took 31.73 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 135.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 13:30:14,265 INFO L168 Benchmark]: RCFGBuilder took 560.06 ms. Allocated memory is still 162.5 MB. Free memory was 135.4 MB in the beginning and 115.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 13:30:14,265 INFO L168 Benchmark]: TraceAbstraction took 19619.16 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 115.0 MB in the beginning and 137.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. [2020-11-09 13:30:14,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 100.4 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 607.58 ms. Allocated memory is still 162.5 MB. Free memory was 136.1 MB in the beginning and 138.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 137.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.73 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 135.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 560.06 ms. Allocated memory is still 162.5 MB. Free memory was 135.4 MB in the beginning and 115.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19619.16 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 115.0 MB in the beginning and 137.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 637 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 15 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 65 PlacesBefore, 20 PlacesAfterwards, 64 TransitionsBefore, 16 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1187 MoverChecksTotal - CounterExampleResult [Line: 685]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 int i = 3, j = 6; [L704] 0 pthread_t id1, id2; [L705] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L706] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L708] 0 int condI = i >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L696] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L688] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L711] 0 int condJ = j >= (2*5 +6); [L713] COND TRUE 0 condI || condJ [L685] COND FALSE 0 !(0) [L685] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.4s, OverallIterations: 23, TraceHistogramMax: 5, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 340 SDtfs, 913 SDslu, 995 SDs, 0 SdLazy, 1129 SolverSat, 521 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 193 SyntacticMatches, 14 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 322 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 26593 SizeOfPredicates, 105 NumberOfNonLiveVariables, 1836 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 39 InterpolantComputations, 5 PerfectInterpolantSequences, 0/240 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...