/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:14:05,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:14:05,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:14:05,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:14:05,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:14:05,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:14:05,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:14:05,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:14:05,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:14:05,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:14:05,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:14:05,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:14:05,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:14:05,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:14:05,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:14:05,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:14:05,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:14:05,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:14:05,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:14:05,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:14:05,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:14:05,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:14:05,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:14:05,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:14:05,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:14:05,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:14:05,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:14:05,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:14:05,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:14:05,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:14:05,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:14:05,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:14:05,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:14:05,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:14:05,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:14:05,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:14:05,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:14:05,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:14:05,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:14:05,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:14:05,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:14:05,722 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-McrAutomaton-SP.epf [2020-10-22 01:14:05,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:14:05,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:14:05,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:14:05,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:14:05,749 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:14:05,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:14:05,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:14:05,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:14:05,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:14:05,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:14:05,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:14:05,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:14:05,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:14:05,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:14:05,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:14:05,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:14:05,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:14:05,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:14:05,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:14:05,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:14:05,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:14:05,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:05,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:14:05,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:14:05,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:14:05,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:14:05,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:14:05,754 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:14:05,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:14:05,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:14:05,754 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:14:06,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:14:06,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:14:06,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:14:06,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:14:06,104 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:14:06,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-10-22 01:14:06,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2429977/d3cf70e3d46f4b9bbf8be37fc0dc0769/FLAG74780f387 [2020-10-22 01:14:06,659 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:14:06,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-10-22 01:14:06,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2429977/d3cf70e3d46f4b9bbf8be37fc0dc0769/FLAG74780f387 [2020-10-22 01:14:06,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2429977/d3cf70e3d46f4b9bbf8be37fc0dc0769 [2020-10-22 01:14:07,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:14:07,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:14:07,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:07,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:14:07,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:14:07,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:06" (1/1) ... [2020-10-22 01:14:07,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47559b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07, skipping insertion in model container [2020-10-22 01:14:07,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:06" (1/1) ... [2020-10-22 01:14:07,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:14:07,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:14:07,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:07,697 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:14:07,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:07,845 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:14:07,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07 WrapperNode [2020-10-22 01:14:07,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:07,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:07,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:14:07,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:14:07,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:07,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:14:07,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:14:07,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:14:07,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:14:07,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:14:07,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:14:07,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:14:07,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-22 01:14:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-22 01:14:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-22 01:14:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-22 01:14:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:14:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 01:14:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:14:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:14:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:14:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 01:14:08,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:14:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:14:08,009 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:14:08,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:14:08,345 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-22 01:14:08,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:08 BoogieIcfgContainer [2020-10-22 01:14:08,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:14:08,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:14:08,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:14:08,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:14:08,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:14:06" (1/3) ... [2020-10-22 01:14:08,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c75b243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:08, skipping insertion in model container [2020-10-22 01:14:08,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07" (2/3) ... [2020-10-22 01:14:08,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c75b243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:08, skipping insertion in model container [2020-10-22 01:14:08,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:08" (3/3) ... [2020-10-22 01:14:08,360 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2020-10-22 01:14:08,372 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:14:08,373 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:14:08,379 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 01:14:08,380 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:14:08,416 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,416 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,417 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,417 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,418 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,418 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,418 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,418 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,419 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,419 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,419 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,420 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,420 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,420 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,420 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,421 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,421 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,421 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,422 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,422 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,422 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,423 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,423 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,423 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,424 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,426 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,426 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,427 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,427 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,427 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,433 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,434 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,434 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,434 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,435 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,445 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,446 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,446 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,446 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,447 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,447 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,449 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 01:14:08,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 01:14:08,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:08,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:08,485 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:08,485 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:08,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:08,486 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:08,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:08,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:08,500 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:08,501 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,504 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,506 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,549 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-10-22 01:14:08,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 01:14:08,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-10-22 01:14:08,561 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-10-22 01:14:10,166 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-22 01:14:10,304 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-22 01:14:10,316 INFO L131 LiptonReduction]: Checked pairs total: 1215 [2020-10-22 01:14:10,316 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-22 01:14:10,326 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-22 01:14:10,356 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-22 01:14:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-22 01:14:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 01:14:10,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:10,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 01:14:10,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:10,378 INFO L82 PathProgramCache]: Analyzing trace with hash -485169148, now seen corresponding path program 1 times [2020-10-22 01:14:10,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:10,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760556309] [2020-10-22 01:14:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:10,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760556309] [2020-10-22 01:14:10,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:10,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:10,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [391655040] [2020-10-22 01:14:10,667 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:10,673 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:10,690 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 01:14:10,691 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:10,698 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:10,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:10,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:10,716 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-22 01:14:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:10,804 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-22 01:14:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:10,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-22 01:14:10,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:10,823 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:14:10,823 INFO L226 Difference]: Without dead ends: 54 [2020-10-22 01:14:10,825 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 [2020-10-22 01:14:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-22 01:14:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-22 01:14:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-22 01:14:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-22 01:14:10,876 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-22 01:14:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:10,876 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-22 01:14:10,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-22 01:14:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:10,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:10,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:10,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:14:10,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:10,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:10,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1939234589, now seen corresponding path program 1 times [2020-10-22 01:14:10,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:10,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226049656] [2020-10-22 01:14:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226049656] [2020-10-22 01:14:11,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:11,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:11,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [951559209] [2020-10-22 01:14:11,025 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:11,026 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:11,030 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-22 01:14:11,031 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:11,101 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:11,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:11,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:11,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:11,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:11,103 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-22 01:14:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:11,157 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-22 01:14:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:11,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-22 01:14:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:11,160 INFO L225 Difference]: With dead ends: 80 [2020-10-22 01:14:11,160 INFO L226 Difference]: Without dead ends: 75 [2020-10-22 01:14:11,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-22 01:14:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-22 01:14:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-22 01:14:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-22 01:14:11,171 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-22 01:14:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:11,172 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-22 01:14:11,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-22 01:14:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:11,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:11,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:11,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:14:11,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1904484586, now seen corresponding path program 1 times [2020-10-22 01:14:11,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:11,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715246453] [2020-10-22 01:14:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715246453] [2020-10-22 01:14:11,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:11,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:11,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [520741437] [2020-10-22 01:14:11,264 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:11,265 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:11,267 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-22 01:14:11,268 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:13,421 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:13,496 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [551#(and (<= (+ ~i~0 ~j~0) 2) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:13,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:13,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:13,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:13,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:13,498 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-22 01:14:13,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:13,569 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-22 01:14:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:13,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-22 01:14:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:13,571 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:14:13,571 INFO L226 Difference]: Without dead ends: 77 [2020-10-22 01:14:13,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-22 01:14:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-22 01:14:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-22 01:14:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-22 01:14:13,582 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-22 01:14:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:13,582 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-22 01:14:13,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-22 01:14:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:13,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:13,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:13,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:14:13,602 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash 13298082, now seen corresponding path program 2 times [2020-10-22 01:14:13,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:13,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758173585] [2020-10-22 01:14:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758173585] [2020-10-22 01:14:13,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218313109] [2020-10-22 01:14:13,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:13,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:13,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:13,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:13,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:13,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:13,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-22 01:14:13,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2002529655] [2020-10-22 01:14:13,861 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:13,861 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:13,863 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-22 01:14:13,863 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:13,945 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:13,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:13,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:13,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:13,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:13,947 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-22 01:14:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:14,015 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-22 01:14:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:14,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-22 01:14:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:14,017 INFO L225 Difference]: With dead ends: 101 [2020-10-22 01:14:14,017 INFO L226 Difference]: Without dead ends: 96 [2020-10-22 01:14:14,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-22 01:14:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-22 01:14:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-22 01:14:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-22 01:14:14,027 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-22 01:14:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:14,027 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-22 01:14:14,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-22 01:14:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:14,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:14,029 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:14,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:14,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:14,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1090495625, now seen corresponding path program 2 times [2020-10-22 01:14:14,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:14,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552770626] [2020-10-22 01:14:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:14,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552770626] [2020-10-22 01:14:14,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222923082] [2020-10-22 01:14:14,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:14,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:14,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:14,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:14,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:14,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:14,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:14,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:14,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [390358778] [2020-10-22 01:14:14,486 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:14,487 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:14,488 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-22 01:14:14,488 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:16,566 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:16,634 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1088#(and (<= (+ (* 2 ~i~0) ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0)), 1087#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:16,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:16,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:16,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:16,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:16,637 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-22 01:14:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:16,786 INFO L93 Difference]: Finished difference Result 100 states and 239 transitions. [2020-10-22 01:14:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:16,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-22 01:14:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:16,789 INFO L225 Difference]: With dead ends: 100 [2020-10-22 01:14:16,789 INFO L226 Difference]: Without dead ends: 94 [2020-10-22 01:14:16,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-22 01:14:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-10-22 01:14:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-22 01:14:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-22 01:14:16,800 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 9 [2020-10-22 01:14:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:16,800 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-22 01:14:16,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-22 01:14:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:16,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:16,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:17,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:17,018 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:17,019 INFO L82 PathProgramCache]: Analyzing trace with hash 402914365, now seen corresponding path program 1 times [2020-10-22 01:14:17,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:17,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350118008] [2020-10-22 01:14:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:17,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350118008] [2020-10-22 01:14:17,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:17,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:14:17,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1826750884] [2020-10-22 01:14:17,104 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:17,105 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:17,107 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 01:14:17,107 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:22,340 WARN L193 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:14:22,402 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:22,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:22,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:22,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:22,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:22,404 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-22 01:14:22,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:22,490 INFO L93 Difference]: Finished difference Result 107 states and 250 transitions. [2020-10-22 01:14:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:22,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-22 01:14:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:22,492 INFO L225 Difference]: With dead ends: 107 [2020-10-22 01:14:22,492 INFO L226 Difference]: Without dead ends: 102 [2020-10-22 01:14:22,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:14:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-22 01:14:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2020-10-22 01:14:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-22 01:14:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 195 transitions. [2020-10-22 01:14:22,502 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 195 transitions. Word has length 10 [2020-10-22 01:14:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:22,502 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 195 transitions. [2020-10-22 01:14:22,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 195 transitions. [2020-10-22 01:14:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:22,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:22,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:22,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 01:14:22,504 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash 403029685, now seen corresponding path program 2 times [2020-10-22 01:14:22,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:22,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648045202] [2020-10-22 01:14:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:22,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648045202] [2020-10-22 01:14:22,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:22,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:14:22,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2106356948] [2020-10-22 01:14:22,572 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:22,573 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:22,575 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-22 01:14:22,575 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:22,984 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:23,030 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:14:23,030 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:14:23,106 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1640#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:23,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:23,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:23,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:23,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:23,107 INFO L87 Difference]: Start difference. First operand 80 states and 195 transitions. Second operand 7 states. [2020-10-22 01:14:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:23,211 INFO L93 Difference]: Finished difference Result 113 states and 262 transitions. [2020-10-22 01:14:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:23,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-22 01:14:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:23,215 INFO L225 Difference]: With dead ends: 113 [2020-10-22 01:14:23,215 INFO L226 Difference]: Without dead ends: 108 [2020-10-22 01:14:23,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-22 01:14:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-22 01:14:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-22 01:14:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-22 01:14:23,226 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-22 01:14:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:23,226 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-22 01:14:23,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-22 01:14:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:23,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:23,228 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:23,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 01:14:23,228 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:23,228 INFO L82 PathProgramCache]: Analyzing trace with hash 412268739, now seen corresponding path program 3 times [2020-10-22 01:14:23,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:23,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308692391] [2020-10-22 01:14:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:23,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308692391] [2020-10-22 01:14:23,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288003069] [2020-10-22 01:14:23,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:23,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:23,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:23,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:23,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:23,442 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:23,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:23,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-22 01:14:23,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1807718512] [2020-10-22 01:14:23,477 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:23,478 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:23,480 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-22 01:14:23,480 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:27,124 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 40 DAG size of output: 9 [2020-10-22 01:14:33,891 WARN L193 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 38 DAG size of output: 7 [2020-10-22 01:14:36,241 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 26 DAG size of output: 7 [2020-10-22 01:14:36,242 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:36,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:36,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:36,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:36,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:36,244 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-22 01:14:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:36,344 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-22 01:14:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:36,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-22 01:14:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:36,345 INFO L225 Difference]: With dead ends: 122 [2020-10-22 01:14:36,346 INFO L226 Difference]: Without dead ends: 117 [2020-10-22 01:14:36,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-22 01:14:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-22 01:14:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-22 01:14:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-22 01:14:36,354 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-22 01:14:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:36,354 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-22 01:14:36,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-22 01:14:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:36,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:36,356 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:36,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:36,584 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:36,584 INFO L82 PathProgramCache]: Analyzing trace with hash 554398346, now seen corresponding path program 3 times [2020-10-22 01:14:36,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:36,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984900633] [2020-10-22 01:14:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:36,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984900633] [2020-10-22 01:14:36,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234541828] [2020-10-22 01:14:36,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:36,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:36,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:36,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:36,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:36,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:37,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:37,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:37,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1002281625] [2020-10-22 01:14:37,023 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:37,025 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:37,027 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 01:14:37,027 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:39,092 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:41,200 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-22 01:14:41,251 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2309#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0)), 2310#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 4)), 2311#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 4))] [2020-10-22 01:14:41,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:14:41,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:14:41,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:14:41,252 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-22 01:14:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:41,433 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-10-22 01:14:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:14:41,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-22 01:14:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:41,438 INFO L225 Difference]: With dead ends: 121 [2020-10-22 01:14:41,439 INFO L226 Difference]: Without dead ends: 115 [2020-10-22 01:14:41,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:14:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-22 01:14:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-10-22 01:14:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-22 01:14:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-22 01:14:41,453 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-22 01:14:41,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:41,453 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-22 01:14:41,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:14:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-22 01:14:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:41,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:41,457 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:41,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:41,658 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:41,659 INFO L82 PathProgramCache]: Analyzing trace with hash -394647540, now seen corresponding path program 3 times [2020-10-22 01:14:41,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:41,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777315169] [2020-10-22 01:14:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:41,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777315169] [2020-10-22 01:14:41,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420612861] [2020-10-22 01:14:41,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:41,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:41,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:41,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:41,841 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:41,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:41,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:41,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1505671566] [2020-10-22 01:14:41,851 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:41,852 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:41,854 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:14:41,854 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:47,020 WARN L193 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:14:50,239 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:14:50,271 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:50,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:50,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:50,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:50,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:50,272 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-22 01:14:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:50,392 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-22 01:14:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:50,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:50,394 INFO L225 Difference]: With dead ends: 121 [2020-10-22 01:14:50,394 INFO L226 Difference]: Without dead ends: 116 [2020-10-22 01:14:50,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-22 01:14:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-22 01:14:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-22 01:14:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-22 01:14:50,400 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-10-22 01:14:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:50,401 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-22 01:14:50,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-22 01:14:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:50,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:50,402 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:50,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-22 01:14:50,616 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:50,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:50,617 INFO L82 PathProgramCache]: Analyzing trace with hash -394532220, now seen corresponding path program 4 times [2020-10-22 01:14:50,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:50,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674691494] [2020-10-22 01:14:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:50,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674691494] [2020-10-22 01:14:50,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493527286] [2020-10-22 01:14:50,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:50,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:50,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:50,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:50,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:50,809 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:50,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:50,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:50,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [513473342] [2020-10-22 01:14:50,819 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:50,820 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:50,821 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:14:50,821 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:50,954 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3030#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:50,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:50,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:50,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:50,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:50,955 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 8 states. [2020-10-22 01:14:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:51,101 INFO L93 Difference]: Finished difference Result 123 states and 295 transitions. [2020-10-22 01:14:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:51,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:14:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:51,104 INFO L225 Difference]: With dead ends: 123 [2020-10-22 01:14:51,104 INFO L226 Difference]: Without dead ends: 118 [2020-10-22 01:14:51,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:14:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-22 01:14:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-10-22 01:14:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 237 transitions. [2020-10-22 01:14:51,109 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 237 transitions. Word has length 11 [2020-10-22 01:14:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:51,110 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 237 transitions. [2020-10-22 01:14:51,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-10-22 01:14:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:51,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:51,111 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:51,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:51,323 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash -394528376, now seen corresponding path program 5 times [2020-10-22 01:14:51,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:51,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488598069] [2020-10-22 01:14:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:51,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488598069] [2020-10-22 01:14:51,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710197598] [2020-10-22 01:14:51,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:51,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:51,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:51,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:51,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:51,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:51,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:51,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:51,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1486362654] [2020-10-22 01:14:51,529 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:51,530 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:51,531 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-10-22 01:14:51,531 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:54,180 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:14:54,221 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:54,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:54,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:54,223 INFO L87 Difference]: Start difference. First operand 95 states and 237 transitions. Second operand 7 states. [2020-10-22 01:14:54,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:54,357 INFO L93 Difference]: Finished difference Result 126 states and 297 transitions. [2020-10-22 01:14:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:54,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:54,358 INFO L225 Difference]: With dead ends: 126 [2020-10-22 01:14:54,359 INFO L226 Difference]: Without dead ends: 121 [2020-10-22 01:14:54,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-22 01:14:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2020-10-22 01:14:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 233 transitions. [2020-10-22 01:14:54,364 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 233 transitions. Word has length 11 [2020-10-22 01:14:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:54,364 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 233 transitions. [2020-10-22 01:14:54,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 233 transitions. [2020-10-22 01:14:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:54,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:54,365 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:54,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:54,578 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash -390957300, now seen corresponding path program 6 times [2020-10-22 01:14:54,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:54,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682534969] [2020-10-22 01:14:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:54,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682534969] [2020-10-22 01:14:54,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238591611] [2020-10-22 01:14:54,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:54,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:14:54,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:54,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:54,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:54,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:54,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:54,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:54,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1440974644] [2020-10-22 01:14:54,775 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:54,776 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:54,777 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-22 01:14:54,777 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:54,910 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3762#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 3763#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:54,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:14:54,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:14:54,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:54,912 INFO L87 Difference]: Start difference. First operand 95 states and 233 transitions. Second operand 9 states. [2020-10-22 01:14:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,106 INFO L93 Difference]: Finished difference Result 140 states and 330 transitions. [2020-10-22 01:14:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:14:55,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-22 01:14:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,108 INFO L225 Difference]: With dead ends: 140 [2020-10-22 01:14:55,108 INFO L226 Difference]: Without dead ends: 135 [2020-10-22 01:14:55,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:14:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-22 01:14:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 98. [2020-10-22 01:14:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:14:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-22 01:14:55,113 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-22 01:14:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,113 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-22 01:14:55,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:14:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-22 01:14:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:55,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,114 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:55,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-22 01:14:55,315 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,316 INFO L82 PathProgramCache]: Analyzing trace with hash -390953456, now seen corresponding path program 7 times [2020-10-22 01:14:55,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631962918] [2020-10-22 01:14:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:55,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631962918] [2020-10-22 01:14:55,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306016580] [2020-10-22 01:14:55,387 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 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 [2020-10-22 01:14:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:55,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:55,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:55,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:55,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:55,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [704982870] [2020-10-22 01:14:55,513 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:55,514 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:55,515 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-10-22 01:14:55,515 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,593 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:55,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:55,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:55,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:55,594 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 7 states. [2020-10-22 01:14:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,744 INFO L93 Difference]: Finished difference Result 141 states and 331 transitions. [2020-10-22 01:14:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:55,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,745 INFO L225 Difference]: With dead ends: 141 [2020-10-22 01:14:55,746 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 01:14:55,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 01:14:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-10-22 01:14:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 01:14:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 237 transitions. [2020-10-22 01:14:55,751 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 237 transitions. Word has length 11 [2020-10-22 01:14:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,751 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 237 transitions. [2020-10-22 01:14:55,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 237 transitions. [2020-10-22 01:14:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:55,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,752 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:55,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:55,966 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash -390838136, now seen corresponding path program 8 times [2020-10-22 01:14:55,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545572100] [2020-10-22 01:14:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:56,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545572100] [2020-10-22 01:14:56,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325393529] [2020-10-22 01:14:56,027 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 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 [2020-10-22 01:14:56,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:56,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:56,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:14:56,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:56,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:56,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-22 01:14:56,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1783559201] [2020-10-22 01:14:56,121 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:56,122 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:56,124 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-22 01:14:56,124 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:56,185 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:14:56,186 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:15:02,890 WARN L193 SmtUtils]: Spent 6.68 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:15:03,600 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 7 [2020-10-22 01:15:03,650 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4539#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:03,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:03,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:15:03,652 INFO L87 Difference]: Start difference. First operand 97 states and 237 transitions. Second operand 8 states. [2020-10-22 01:15:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:03,800 INFO L93 Difference]: Finished difference Result 141 states and 327 transitions. [2020-10-22 01:15:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:15:03,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:15:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:03,803 INFO L225 Difference]: With dead ends: 141 [2020-10-22 01:15:03,803 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 01:15:03,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:15:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 01:15:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2020-10-22 01:15:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:15:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-22 01:15:03,808 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-22 01:15:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:03,808 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-22 01:15:03,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-22 01:15:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:15:03,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:03,809 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:04,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-22 01:15:04,021 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:04,022 INFO L82 PathProgramCache]: Analyzing trace with hash -104542782, now seen corresponding path program 4 times [2020-10-22 01:15:04,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:04,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175481966] [2020-10-22 01:15:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:04,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175481966] [2020-10-22 01:15:04,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034792132] [2020-10-22 01:15:04,094 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 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 [2020-10-22 01:15:04,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:04,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:04,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:04,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:04,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:04,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:04,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-22 01:15:04,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1148012404] [2020-10-22 01:15:04,257 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:04,257 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:04,259 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-22 01:15:04,259 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:06,676 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 28 DAG size of output: 9 [2020-10-22 01:15:10,343 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 38 DAG size of output: 7 [2020-10-22 01:15:10,386 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:10,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:10,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:10,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:10,387 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-22 01:15:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:10,500 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-22 01:15:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:10,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:15:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:10,501 INFO L225 Difference]: With dead ends: 143 [2020-10-22 01:15:10,501 INFO L226 Difference]: Without dead ends: 138 [2020-10-22 01:15:10,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-22 01:15:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-22 01:15:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-22 01:15:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-22 01:15:10,506 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-22 01:15:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:10,506 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-22 01:15:10,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-22 01:15:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:15:10,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:10,507 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:10,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-22 01:15:10,719 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:10,719 INFO L82 PathProgramCache]: Analyzing trace with hash 6503895, now seen corresponding path program 4 times [2020-10-22 01:15:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:10,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336269688] [2020-10-22 01:15:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:10,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336269688] [2020-10-22 01:15:10,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634909947] [2020-10-22 01:15:10,789 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 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 [2020-10-22 01:15:10,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:10,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:10,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:10,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:10,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:10,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:10,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:10,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1141114920] [2020-10-22 01:15:10,962 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:10,962 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:10,964 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:15:10,964 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:13,061 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:15:13,140 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [5337#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 5338#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 5339#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 5)), 5340#(and (<= (+ (* 4 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:13,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:15:13,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:13,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:15:13,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:15:13,142 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-22 01:15:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:13,394 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-22 01:15:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:15:13,396 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-22 01:15:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:13,397 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:13,398 INFO L226 Difference]: Without dead ends: 143 [2020-10-22 01:15:13,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:15:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-22 01:15:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-10-22 01:15:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-22 01:15:13,402 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-22 01:15:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:13,402 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-22 01:15:13,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:15:13,403 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-22 01:15:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:13,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:13,403 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:13,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-22 01:15:13,614 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:13,614 INFO L82 PathProgramCache]: Analyzing trace with hash 650737181, now seen corresponding path program 9 times [2020-10-22 01:15:13,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:13,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332907892] [2020-10-22 01:15:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:13,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332907892] [2020-10-22 01:15:13,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641015271] [2020-10-22 01:15:13,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:13,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:15:13,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:13,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:13,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:13,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:13,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:13,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:13,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1919464170] [2020-10-22 01:15:13,839 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:13,840 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:13,841 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:13,842 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:17,745 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 41 DAG size of output: 9 [2020-10-22 01:15:17,808 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:17,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:17,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:17,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:17,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:17,810 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 8 states. [2020-10-22 01:15:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:17,966 INFO L93 Difference]: Finished difference Result 152 states and 363 transitions. [2020-10-22 01:15:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:17,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:17,968 INFO L225 Difference]: With dead ends: 152 [2020-10-22 01:15:17,968 INFO L226 Difference]: Without dead ends: 147 [2020-10-22 01:15:17,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:15:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-22 01:15:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-22 01:15:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-22 01:15:17,973 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-10-22 01:15:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:17,973 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-22 01:15:17,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-22 01:15:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:17,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:17,974 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:18,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-22 01:15:18,187 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash 650852501, now seen corresponding path program 10 times [2020-10-22 01:15:18,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:18,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115339327] [2020-10-22 01:15:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:18,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115339327] [2020-10-22 01:15:18,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001094938] [2020-10-22 01:15:18,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:18,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:18,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:18,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:18,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:18,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:19,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:19,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-22 01:15:19,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [928513689] [2020-10-22 01:15:19,682 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:19,683 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:19,685 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:19,685 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:23,425 WARN L193 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:15:25,393 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:15:25,423 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6209#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-22 01:15:25,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:25,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:25,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:25,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2020-10-22 01:15:25,424 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 9 states. [2020-10-22 01:15:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:30,428 INFO L93 Difference]: Finished difference Result 156 states and 370 transitions. [2020-10-22 01:15:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:30,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:30,434 INFO L225 Difference]: With dead ends: 156 [2020-10-22 01:15:30,435 INFO L226 Difference]: Without dead ends: 151 [2020-10-22 01:15:30,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=128, Invalid=287, Unknown=5, NotChecked=0, Total=420 [2020-10-22 01:15:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-22 01:15:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 112. [2020-10-22 01:15:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-10-22 01:15:30,439 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-10-22 01:15:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:30,440 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-10-22 01:15:30,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-10-22 01:15:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:30,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:30,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:30,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:30,642 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:30,642 INFO L82 PathProgramCache]: Analyzing trace with hash 650856345, now seen corresponding path program 11 times [2020-10-22 01:15:30,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:30,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152094858] [2020-10-22 01:15:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:30,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152094858] [2020-10-22 01:15:30,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420332315] [2020-10-22 01:15:30,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:30,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:30,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:30,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:30,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:30,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:30,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:30,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:30,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [705135671] [2020-10-22 01:15:30,860 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:30,861 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:30,862 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-22 01:15:30,863 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:34,214 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:15:34,252 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:34,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:34,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:34,254 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 8 states. [2020-10-22 01:15:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:34,421 INFO L93 Difference]: Finished difference Result 148 states and 355 transitions. [2020-10-22 01:15:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:34,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:34,423 INFO L225 Difference]: With dead ends: 148 [2020-10-22 01:15:34,423 INFO L226 Difference]: Without dead ends: 143 [2020-10-22 01:15:34,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-22 01:15:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-10-22 01:15:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-22 01:15:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 274 transitions. [2020-10-22 01:15:34,429 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 274 transitions. Word has length 12 [2020-10-22 01:15:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:34,429 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 274 transitions. [2020-10-22 01:15:34,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 274 transitions. [2020-10-22 01:15:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:34,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:34,430 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:34,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:34,644 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash 654427421, now seen corresponding path program 12 times [2020-10-22 01:15:34,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:34,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319753418] [2020-10-22 01:15:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:34,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319753418] [2020-10-22 01:15:34,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201476173] [2020-10-22 01:15:34,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:34,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:15:34,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:34,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:34,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:34,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:34,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:34,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:34,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1513341879] [2020-10-22 01:15:34,857 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:34,858 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:34,860 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:34,860 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:35,365 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:40,739 WARN L193 SmtUtils]: Spent 5.35 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:15:40,791 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7076#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0)), 7077#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 8))] [2020-10-22 01:15:40,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:15:40,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:40,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:15:40,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:15:40,792 INFO L87 Difference]: Start difference. First operand 111 states and 274 transitions. Second operand 10 states. [2020-10-22 01:15:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:41,015 INFO L93 Difference]: Finished difference Result 154 states and 369 transitions. [2020-10-22 01:15:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:41,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-22 01:15:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:41,017 INFO L225 Difference]: With dead ends: 154 [2020-10-22 01:15:41,017 INFO L226 Difference]: Without dead ends: 149 [2020-10-22 01:15:41,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:15:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-22 01:15:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-22 01:15:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-22 01:15:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2020-10-22 01:15:41,024 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 12 [2020-10-22 01:15:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:41,024 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2020-10-22 01:15:41,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:15:41,024 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2020-10-22 01:15:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:41,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:41,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:41,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:41,236 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash 654431265, now seen corresponding path program 13 times [2020-10-22 01:15:41,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:41,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943608243] [2020-10-22 01:15:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:41,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943608243] [2020-10-22 01:15:41,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621890073] [2020-10-22 01:15:41,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:41,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:41,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:41,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:41,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:41,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1967327193] [2020-10-22 01:15:41,448 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:41,449 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:41,451 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-22 01:15:41,451 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:41,507 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:41,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:41,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:41,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:41,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:41,509 INFO L87 Difference]: Start difference. First operand 114 states and 287 transitions. Second operand 8 states. [2020-10-22 01:15:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:41,707 INFO L93 Difference]: Finished difference Result 146 states and 353 transitions. [2020-10-22 01:15:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:41,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:41,709 INFO L225 Difference]: With dead ends: 146 [2020-10-22 01:15:41,709 INFO L226 Difference]: Without dead ends: 141 [2020-10-22 01:15:41,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-22 01:15:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-22 01:15:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-22 01:15:41,714 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 12 [2020-10-22 01:15:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:41,714 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-22 01:15:41,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-22 01:15:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:41,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:41,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:41,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-22 01:15:41,927 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:41,927 INFO L82 PathProgramCache]: Analyzing trace with hash 654546585, now seen corresponding path program 14 times [2020-10-22 01:15:41,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:41,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196235427] [2020-10-22 01:15:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196235427] [2020-10-22 01:15:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634834411] [2020-10-22 01:15:42,003 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:42,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:42,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:42,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:42,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:42,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:42,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:42,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:42,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [479317715] [2020-10-22 01:15:42,193 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:42,194 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:42,196 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-22 01:15:42,196 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:42,595 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:44,720 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:15:44,751 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7952#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-22 01:15:44,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:44,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:44,752 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 9 states. [2020-10-22 01:15:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:44,964 INFO L93 Difference]: Finished difference Result 149 states and 359 transitions. [2020-10-22 01:15:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:44,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:44,967 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:44,967 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:15:44,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:15:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-22 01:15:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 284 transitions. [2020-10-22 01:15:44,972 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 284 transitions. Word has length 12 [2020-10-22 01:15:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:44,972 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 284 transitions. [2020-10-22 01:15:44,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 284 transitions. [2020-10-22 01:15:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:44,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:44,973 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:45,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-22 01:15:45,185 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:45,185 INFO L82 PathProgramCache]: Analyzing trace with hash 654550429, now seen corresponding path program 15 times [2020-10-22 01:15:45,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:45,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331573496] [2020-10-22 01:15:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:45,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331573496] [2020-10-22 01:15:45,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381734836] [2020-10-22 01:15:45,251 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:45,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:15:45,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:45,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:45,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:45,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:45,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:45,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1817977299] [2020-10-22 01:15:45,400 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:45,416 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:45,417 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-22 01:15:45,417 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:45,482 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:45,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:45,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:45,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:45,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:45,483 INFO L87 Difference]: Start difference. First operand 113 states and 284 transitions. Second operand 8 states. [2020-10-22 01:15:45,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:45,668 INFO L93 Difference]: Finished difference Result 149 states and 352 transitions. [2020-10-22 01:15:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:45,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:45,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:45,670 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:45,670 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:15:45,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:15:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-22 01:15:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-22 01:15:45,675 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-10-22 01:15:45,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:45,675 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-22 01:15:45,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-22 01:15:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:45,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:45,677 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:45,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-22 01:15:45,889 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:45,889 INFO L82 PathProgramCache]: Analyzing trace with hash 765249941, now seen corresponding path program 16 times [2020-10-22 01:15:45,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:45,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705519763] [2020-10-22 01:15:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:45,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705519763] [2020-10-22 01:15:45,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438219483] [2020-10-22 01:15:45,975 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:46,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:46,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:46,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:46,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:46,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:46,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:46,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:46,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1451934245] [2020-10-22 01:15:46,111 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:46,112 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:46,114 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-22 01:15:46,114 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:46,589 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:46,730 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [8821#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7)), 8822#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 7)), 8823#(and (<= (+ (* 3 ~i~0) ~j~0) 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:46,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:15:46,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:46,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:15:46,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:15:46,731 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 11 states. [2020-10-22 01:15:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:47,019 INFO L93 Difference]: Finished difference Result 174 states and 410 transitions. [2020-10-22 01:15:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-22 01:15:47,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-22 01:15:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:47,022 INFO L225 Difference]: With dead ends: 174 [2020-10-22 01:15:47,022 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:15:47,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:15:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:15:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 118. [2020-10-22 01:15:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-22 01:15:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-22 01:15:47,027 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-22 01:15:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:47,027 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-22 01:15:47,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:15:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-22 01:15:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:47,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:47,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:47,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-22 01:15:47,238 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash 765253785, now seen corresponding path program 17 times [2020-10-22 01:15:47,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:47,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683636509] [2020-10-22 01:15:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:47,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683636509] [2020-10-22 01:15:47,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145514546] [2020-10-22 01:15:47,312 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:47,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:15:47,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:47,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:47,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:47,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:47,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:47,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:47,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1661738157] [2020-10-22 01:15:47,452 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:47,452 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:47,453 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:47,454 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:47,530 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:47,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:47,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:47,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:47,531 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-22 01:15:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:47,746 INFO L93 Difference]: Finished difference Result 174 states and 412 transitions. [2020-10-22 01:15:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:47,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:47,748 INFO L225 Difference]: With dead ends: 174 [2020-10-22 01:15:47,748 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:15:47,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:15:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 117. [2020-10-22 01:15:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-22 01:15:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 290 transitions. [2020-10-22 01:15:47,752 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 290 transitions. Word has length 12 [2020-10-22 01:15:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:47,752 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 290 transitions. [2020-10-22 01:15:47,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 290 transitions. [2020-10-22 01:15:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:47,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:47,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:47,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-22 01:15:47,964 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash 765369105, now seen corresponding path program 18 times [2020-10-22 01:15:47,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:47,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680574595] [2020-10-22 01:15:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:48,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680574595] [2020-10-22 01:15:48,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972421267] [2020-10-22 01:15:48,028 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:48,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:15:48,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:48,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:48,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:48,141 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:48,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:48,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:48,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1259094808] [2020-10-22 01:15:48,152 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:48,153 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:48,155 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-22 01:15:48,156 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:50,284 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:50,338 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9768#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:50,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:50,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:50,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:50,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:50,339 INFO L87 Difference]: Start difference. First operand 117 states and 290 transitions. Second operand 9 states. [2020-10-22 01:15:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:50,548 INFO L93 Difference]: Finished difference Result 170 states and 401 transitions. [2020-10-22 01:15:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:50,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:50,551 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:15:50,551 INFO L226 Difference]: Without dead ends: 165 [2020-10-22 01:15:50,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-22 01:15:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-22 01:15:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-22 01:15:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-22 01:15:50,556 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-22 01:15:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:50,556 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-22 01:15:50,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-22 01:15:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:50,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:50,557 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:50,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:50,769 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash 765372949, now seen corresponding path program 19 times [2020-10-22 01:15:50,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:50,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377851631] [2020-10-22 01:15:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:50,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377851631] [2020-10-22 01:15:50,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835253698] [2020-10-22 01:15:50,834 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:50,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:50,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:50,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:50,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:50,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:50,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [208156482] [2020-10-22 01:15:50,996 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:50,997 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:50,999 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:50,999 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:51,066 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:51,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:51,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:51,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:51,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:51,067 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-22 01:15:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:51,260 INFO L93 Difference]: Finished difference Result 170 states and 403 transitions. [2020-10-22 01:15:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:51,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:51,262 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:15:51,263 INFO L226 Difference]: Without dead ends: 165 [2020-10-22 01:15:51,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-22 01:15:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 116. [2020-10-22 01:15:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-22 01:15:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 285 transitions. [2020-10-22 01:15:51,268 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 285 transitions. Word has length 12 [2020-10-22 01:15:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:51,268 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 285 transitions. [2020-10-22 01:15:51,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 285 transitions. [2020-10-22 01:15:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:51,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:51,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:51,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-22 01:15:51,479 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:51,480 INFO L82 PathProgramCache]: Analyzing trace with hash 768944025, now seen corresponding path program 20 times [2020-10-22 01:15:51,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:51,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738274636] [2020-10-22 01:15:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:51,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738274636] [2020-10-22 01:15:51,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856998782] [2020-10-22 01:15:51,546 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:51,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:51,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:51,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:51,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:51,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:51,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:51,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:51,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [701561308] [2020-10-22 01:15:51,713 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:51,714 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:51,716 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 01:15:51,716 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:53,792 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:53,916 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:15:53,917 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:15:57,804 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:15:59,935 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 38 DAG size of output: 7 [2020-10-22 01:16:00,695 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 7 [2020-10-22 01:16:00,696 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [10697#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7)), 10698#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 7))] [2020-10-22 01:16:00,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:16:00,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:00,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:16:00,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:00,697 INFO L87 Difference]: Start difference. First operand 116 states and 285 transitions. Second operand 10 states. [2020-10-22 01:16:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:00,933 INFO L93 Difference]: Finished difference Result 183 states and 422 transitions. [2020-10-22 01:16:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:00,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-22 01:16:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:00,936 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:16:00,936 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:16:00,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:16:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:16:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2020-10-22 01:16:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-22 01:16:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-22 01:16:00,941 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-22 01:16:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:00,941 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-22 01:16:00,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:16:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-22 01:16:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:00,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:00,942 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:01,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-22 01:16:01,143 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:01,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1054169251, now seen corresponding path program 5 times [2020-10-22 01:16:01,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:01,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418307398] [2020-10-22 01:16:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:01,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418307398] [2020-10-22 01:16:01,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975517593] [2020-10-22 01:16:01,230 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:01,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:16:01,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:01,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:01,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:01,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:01,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:01,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:01,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [641677550] [2020-10-22 01:16:01,413 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:01,414 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:01,415 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 01:16:01,415 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:03,532 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 28 DAG size of output: 9 [2020-10-22 01:16:06,005 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 28 DAG size of output: 9 [2020-10-22 01:16:06,016 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:06,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:06,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:06,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:16:06,017 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-22 01:16:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:06,168 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-22 01:16:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:06,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:16:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:06,170 INFO L225 Difference]: With dead ends: 164 [2020-10-22 01:16:06,170 INFO L226 Difference]: Without dead ends: 159 [2020-10-22 01:16:06,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:16:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-22 01:16:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-22 01:16:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-22 01:16:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-22 01:16:06,176 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-22 01:16:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:06,176 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-22 01:16:06,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-22 01:16:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:06,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:06,177 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:06,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:06,378 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 201645098, now seen corresponding path program 5 times [2020-10-22 01:16:06,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:06,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104873670] [2020-10-22 01:16:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:06,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104873670] [2020-10-22 01:16:06,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219312864] [2020-10-22 01:16:06,455 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:06,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:16:06,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:06,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:06,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:06,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:06,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:06,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:06,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1287404073] [2020-10-22 01:16:06,706 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:06,707 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:06,710 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:16:06,710 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:06,889 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [11643#(and (<= (+ ~i~0 ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11644#(and (<= (+ (* 2 ~i~0) ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11645#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 6)), 11646#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 4 ~i~0) ~j~0) 6)), 11647#(and (<= (+ (* 5 ~i~0) ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:16:06,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 01:16:06,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:06,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 01:16:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:16:06,890 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-22 01:16:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:07,269 INFO L93 Difference]: Finished difference Result 175 states and 416 transitions. [2020-10-22 01:16:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-22 01:16:07,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-22 01:16:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:07,271 INFO L225 Difference]: With dead ends: 175 [2020-10-22 01:16:07,271 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:16:07,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2020-10-22 01:16:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:16:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2020-10-22 01:16:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:16:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:16:07,276 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-22 01:16:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:07,276 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:16:07,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 01:16:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:16:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:07,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:07,280 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:07,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:07,493 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1302074836, now seen corresponding path program 21 times [2020-10-22 01:16:07,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:07,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362431597] [2020-10-22 01:16:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:07,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362431597] [2020-10-22 01:16:07,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476002517] [2020-10-22 01:16:07,568 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:07,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:16:07,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:07,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:07,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:07,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:07,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:07,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:07,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1420501154] [2020-10-22 01:16:07,754 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:07,755 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:07,757 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:07,757 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:13,608 WARN L193 SmtUtils]: Spent 5.79 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:16:16,238 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:16:16,272 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:16,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:16,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:16,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:16,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:16,274 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-22 01:16:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:16,461 INFO L93 Difference]: Finished difference Result 183 states and 437 transitions. [2020-10-22 01:16:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:16,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:16:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:16,464 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:16:16,464 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:16:16,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:16:16,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:16:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:16:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:16:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-22 01:16:16,468 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-22 01:16:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:16,468 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-22 01:16:16,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-22 01:16:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:16,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:16,469 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:16,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-22 01:16:16,680 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:16,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1301959516, now seen corresponding path program 22 times [2020-10-22 01:16:16,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:16,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472585584] [2020-10-22 01:16:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:16,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472585584] [2020-10-22 01:16:16,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664776556] [2020-10-22 01:16:16,762 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:16,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:16:16,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:16,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:16,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:16,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:18,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:18,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:18,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [727321090] [2020-10-22 01:16:18,128 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:18,130 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:18,132 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:18,133 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:22,003 WARN L193 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 41 DAG size of output: 9 [2020-10-22 01:16:25,749 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:16:25,832 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12663#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:16:25,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:16:25,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:25,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:16:25,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-22 01:16:25,834 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-22 01:16:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:33,853 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-22 01:16:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:33,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:16:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:33,856 INFO L225 Difference]: With dead ends: 192 [2020-10-22 01:16:33,856 INFO L226 Difference]: Without dead ends: 187 [2020-10-22 01:16:33,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=168, Invalid=378, Unknown=6, NotChecked=0, Total=552 [2020-10-22 01:16:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-22 01:16:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 131. [2020-10-22 01:16:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:16:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-10-22 01:16:33,861 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-10-22 01:16:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:33,862 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-10-22 01:16:33,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:16:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-10-22 01:16:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:33,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:33,863 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:34,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:34,074 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:34,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1301955672, now seen corresponding path program 23 times [2020-10-22 01:16:34,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:34,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773644658] [2020-10-22 01:16:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:34,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773644658] [2020-10-22 01:16:34,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742512183] [2020-10-22 01:16:34,151 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:34,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:16:34,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:34,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:34,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:34,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:34,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:34,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:34,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [922050203] [2020-10-22 01:16:34,323 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:34,324 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:34,326 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:16:34,326 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:38,781 WARN L193 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:16:42,206 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:16:42,240 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:42,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:42,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:42,241 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 9 states. [2020-10-22 01:16:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:42,451 INFO L93 Difference]: Finished difference Result 184 states and 441 transitions. [2020-10-22 01:16:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:42,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:16:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:42,453 INFO L225 Difference]: With dead ends: 184 [2020-10-22 01:16:42,454 INFO L226 Difference]: Without dead ends: 179 [2020-10-22 01:16:42,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:16:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-22 01:16:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2020-10-22 01:16:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-22 01:16:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-10-22 01:16:42,458 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-10-22 01:16:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:42,459 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-10-22 01:16:42,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-10-22 01:16:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:42,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:42,460 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:42,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-22 01:16:42,671 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1298384596, now seen corresponding path program 24 times [2020-10-22 01:16:42,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:42,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32704661] [2020-10-22 01:16:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:42,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32704661] [2020-10-22 01:16:42,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794707252] [2020-10-22 01:16:42,743 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:42,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:16:42,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:42,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:42,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:42,933 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:42,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:42,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:42,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [765812769] [2020-10-22 01:16:42,969 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:42,970 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:42,972 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:42,972 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:45,023 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-22 01:16:50,243 WARN L193 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:16:50,289 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [13690#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 13691#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:16:50,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:16:50,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:50,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:16:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:16:50,290 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 11 states. [2020-10-22 01:16:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:50,581 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-22 01:16:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:50,582 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-22 01:16:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:50,584 INFO L225 Difference]: With dead ends: 192 [2020-10-22 01:16:50,584 INFO L226 Difference]: Without dead ends: 187 [2020-10-22 01:16:50,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:16:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-22 01:16:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 132. [2020-10-22 01:16:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:16:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:16:50,588 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:16:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:50,588 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:16:50,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:16:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:16:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:50,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:50,589 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:50,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:50,800 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1298380752, now seen corresponding path program 25 times [2020-10-22 01:16:50,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:50,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660064212] [2020-10-22 01:16:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:50,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660064212] [2020-10-22 01:16:50,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152087517] [2020-10-22 01:16:50,889 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:50,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:50,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:53,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:59,372 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-10-22 01:16:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:59,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:59,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:59,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2119243113] [2020-10-22 01:16:59,375 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:59,376 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:59,379 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:16:59,379 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:04,846 WARN L193 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:17:06,944 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:17:06,980 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:06,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:06,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:06,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:06,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2020-10-22 01:17:06,981 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-22 01:17:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:17,442 INFO L93 Difference]: Finished difference Result 183 states and 439 transitions. [2020-10-22 01:17:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:17,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:17,445 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:17:17,445 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:17:17,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=170, Invalid=375, Unknown=7, NotChecked=0, Total=552 [2020-10-22 01:17:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:17:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:17:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:17:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-22 01:17:17,449 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-22 01:17:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:17,449 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-22 01:17:17,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-22 01:17:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:17,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:17,450 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:17,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-22 01:17:17,659 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:17,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1298265432, now seen corresponding path program 26 times [2020-10-22 01:17:17,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:17,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939441885] [2020-10-22 01:17:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:17,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939441885] [2020-10-22 01:17:17,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483027840] [2020-10-22 01:17:17,740 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:17,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:17:17,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:17,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:17,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:17,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:17,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:17,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [832144419] [2020-10-22 01:17:17,999 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:18,000 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:18,003 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:17:18,003 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:23,766 WARN L193 SmtUtils]: Spent 5.74 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:17:23,852 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14728#(and (<= (+ ~i~0 ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:23,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:17:23,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:17:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:17:23,853 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-22 01:17:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:24,135 INFO L93 Difference]: Finished difference Result 186 states and 445 transitions. [2020-10-22 01:17:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:24,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:17:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:24,138 INFO L225 Difference]: With dead ends: 186 [2020-10-22 01:17:24,138 INFO L226 Difference]: Without dead ends: 181 [2020-10-22 01:17:24,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:17:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-22 01:17:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 130. [2020-10-22 01:17:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-22 01:17:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 326 transitions. [2020-10-22 01:17:24,146 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 326 transitions. Word has length 13 [2020-10-22 01:17:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:24,146 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 326 transitions. [2020-10-22 01:17:24,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:17:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 326 transitions. [2020-10-22 01:17:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:24,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:24,147 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:24,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-22 01:17:24,357 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1298261588, now seen corresponding path program 27 times [2020-10-22 01:17:24,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:24,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493896457] [2020-10-22 01:17:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:24,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493896457] [2020-10-22 01:17:24,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730330591] [2020-10-22 01:17:24,432 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:24,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:17:24,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:24,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:24,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:24,585 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:24,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:24,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:24,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1534750417] [2020-10-22 01:17:24,599 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:24,600 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:24,603 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:17:24,603 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:30,137 WARN L193 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:17:30,171 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:30,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:30,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:30,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:30,173 INFO L87 Difference]: Start difference. First operand 130 states and 326 transitions. Second operand 9 states. [2020-10-22 01:17:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:30,410 INFO L93 Difference]: Finished difference Result 176 states and 422 transitions. [2020-10-22 01:17:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:30,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:30,413 INFO L225 Difference]: With dead ends: 176 [2020-10-22 01:17:30,413 INFO L226 Difference]: Without dead ends: 171 [2020-10-22 01:17:30,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:17:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-22 01:17:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2020-10-22 01:17:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-22 01:17:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-22 01:17:30,416 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-22 01:17:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:30,416 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-22 01:17:30,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-22 01:17:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:30,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:30,417 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:30,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-22 01:17:30,618 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:30,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1187562076, now seen corresponding path program 28 times [2020-10-22 01:17:30,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:30,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360628359] [2020-10-22 01:17:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:30,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360628359] [2020-10-22 01:17:30,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774513793] [2020-10-22 01:17:30,694 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:30,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:17:30,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:30,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:30,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:30,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:30,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:30,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1913167623] [2020-10-22 01:17:30,874 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:30,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:30,877 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:17:30,877 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:31,355 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:17:31,918 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-10-22 01:17:31,948 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [15741#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 15742#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 15743#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:31,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:17:31,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:17:31,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:17:31,950 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 12 states. [2020-10-22 01:17:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:32,257 INFO L93 Difference]: Finished difference Result 185 states and 443 transitions. [2020-10-22 01:17:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:32,258 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-22 01:17:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:32,260 INFO L225 Difference]: With dead ends: 185 [2020-10-22 01:17:32,260 INFO L226 Difference]: Without dead ends: 180 [2020-10-22 01:17:32,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-10-22 01:17:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-22 01:17:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-10-22 01:17:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-22 01:17:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-10-22 01:17:32,264 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-10-22 01:17:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:32,264 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-10-22 01:17:32,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:17:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-10-22 01:17:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:32,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:32,265 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:32,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-22 01:17:32,466 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:32,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1187558232, now seen corresponding path program 29 times [2020-10-22 01:17:32,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:32,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256443451] [2020-10-22 01:17:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:32,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256443451] [2020-10-22 01:17:32,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220478584] [2020-10-22 01:17:32,547 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:32,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:17:32,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:32,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:32,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:32,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:32,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:32,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:32,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1801317556] [2020-10-22 01:17:32,727 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:32,728 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:32,729 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:17:32,729 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:32,802 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:32,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:32,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:32,804 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 9 states. [2020-10-22 01:17:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:33,100 INFO L93 Difference]: Finished difference Result 180 states and 436 transitions. [2020-10-22 01:17:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:33,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:33,103 INFO L225 Difference]: With dead ends: 180 [2020-10-22 01:17:33,103 INFO L226 Difference]: Without dead ends: 175 [2020-10-22 01:17:33,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:17:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-22 01:17:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132. [2020-10-22 01:17:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:17:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:17:33,107 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:17:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:33,107 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:17:33,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:17:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:33,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:33,108 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:33,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-22 01:17:33,318 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1187442912, now seen corresponding path program 30 times [2020-10-22 01:17:33,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:33,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921331187] [2020-10-22 01:17:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:33,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921331187] [2020-10-22 01:17:33,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460298207] [2020-10-22 01:17:33,399 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:33,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:17:33,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:33,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:33,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:33,542 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:33,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:33,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:33,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1533305558] [2020-10-22 01:17:33,552 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:33,554 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:33,555 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:17:33,555 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:33,639 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16777#(and (<= (+ ~i~0 ~j~0) 13) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:33,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:17:33,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:17:33,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:17:33,640 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 10 states. [2020-10-22 01:17:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:33,965 INFO L93 Difference]: Finished difference Result 183 states and 442 transitions. [2020-10-22 01:17:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:33,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:17:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:33,968 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:17:33,968 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:17:33,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:17:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:17:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-10-22 01:17:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:17:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 334 transitions. [2020-10-22 01:17:33,971 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 334 transitions. Word has length 13 [2020-10-22 01:17:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:33,971 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 334 transitions. [2020-10-22 01:17:33,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:17:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 334 transitions. [2020-10-22 01:17:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:33,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:33,972 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:34,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-22 01:17:34,173 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:34,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1187439068, now seen corresponding path program 31 times [2020-10-22 01:17:34,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:34,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425702796] [2020-10-22 01:17:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:34,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425702796] [2020-10-22 01:17:34,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716919579] [2020-10-22 01:17:34,256 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:34,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:34,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:34,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:34,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:34,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:34,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [211018541] [2020-10-22 01:17:34,418 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:34,419 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:34,421 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:17:34,421 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:34,493 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:34,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:34,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:34,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:34,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:34,497 INFO L87 Difference]: Start difference. First operand 132 states and 334 transitions. Second operand 9 states. [2020-10-22 01:17:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:34,733 INFO L93 Difference]: Finished difference Result 175 states and 425 transitions. [2020-10-22 01:17:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:34,734 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:34,735 INFO L225 Difference]: With dead ends: 175 [2020-10-22 01:17:34,735 INFO L226 Difference]: Without dead ends: 170 [2020-10-22 01:17:34,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:17:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-22 01:17:34,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 130. [2020-10-22 01:17:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-22 01:17:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 324 transitions. [2020-10-22 01:17:34,739 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 324 transitions. Word has length 13 [2020-10-22 01:17:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:34,739 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 324 transitions. [2020-10-22 01:17:34,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 324 transitions. [2020-10-22 01:17:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:34,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:34,740 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:34,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-22 01:17:34,941 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1183867992, now seen corresponding path program 32 times [2020-10-22 01:17:34,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:34,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605443344] [2020-10-22 01:17:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:35,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605443344] [2020-10-22 01:17:35,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998952250] [2020-10-22 01:17:35,016 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:35,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:17:35,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:35,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:35,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:35,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:35,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:35,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599415297] [2020-10-22 01:17:35,213 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:35,214 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:35,215 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:17:35,216 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:39,400 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:17:39,487 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [17798#(and (<= (+ ~i~0 ~j~0) 12) (= ULTIMATE.start_main_~condI~0 0)), 17799#(and (<= (+ (* 2 ~i~0) ~j~0) 12) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:39,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:17:39,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:39,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:17:39,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:17:39,489 INFO L87 Difference]: Start difference. First operand 130 states and 324 transitions. Second operand 11 states. [2020-10-22 01:17:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:39,785 INFO L93 Difference]: Finished difference Result 185 states and 445 transitions. [2020-10-22 01:17:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:39,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-22 01:17:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:39,787 INFO L225 Difference]: With dead ends: 185 [2020-10-22 01:17:39,787 INFO L226 Difference]: Without dead ends: 180 [2020-10-22 01:17:39,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:17:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-22 01:17:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-10-22 01:17:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-22 01:17:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-10-22 01:17:39,792 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-10-22 01:17:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:39,792 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-10-22 01:17:39,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:17:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-10-22 01:17:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:39,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:39,793 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:40,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:40,004 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:40,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1183864148, now seen corresponding path program 33 times [2020-10-22 01:17:40,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:40,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212321] [2020-10-22 01:17:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:40,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212321] [2020-10-22 01:17:40,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930194486] [2020-10-22 01:17:40,086 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:40,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:17:40,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:40,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:40,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:40,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:40,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:40,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:40,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [720321663] [2020-10-22 01:17:40,296 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:40,296 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:40,298 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:17:40,298 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:45,021 WARN L193 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:17:45,055 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:45,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:45,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:45,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:45,056 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 9 states. [2020-10-22 01:17:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:45,356 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-22 01:17:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:45,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:45,359 INFO L225 Difference]: With dead ends: 176 [2020-10-22 01:17:45,359 INFO L226 Difference]: Without dead ends: 171 [2020-10-22 01:17:45,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:17:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-22 01:17:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 132. [2020-10-22 01:17:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:17:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:17:45,364 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:17:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:45,364 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:17:45,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:17:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:45,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:45,365 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:45,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-22 01:17:45,576 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1183748828, now seen corresponding path program 34 times [2020-10-22 01:17:45,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:45,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933609925] [2020-10-22 01:17:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:45,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933609925] [2020-10-22 01:17:45,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890259734] [2020-10-22 01:17:45,653 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:45,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:17:45,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:45,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:45,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:45,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:45,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:45,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:45,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [330397066] [2020-10-22 01:17:45,853 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:45,854 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:45,856 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:17:45,856 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:45,945 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18829#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:45,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:17:45,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:45,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:17:45,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:17:45,946 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 10 states. [2020-10-22 01:17:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:46,251 INFO L93 Difference]: Finished difference Result 183 states and 442 transitions. [2020-10-22 01:17:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:46,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:17:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:46,253 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:17:46,253 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:17:46,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:17:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:17:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:17:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:17:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 331 transitions. [2020-10-22 01:17:46,258 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 331 transitions. Word has length 13 [2020-10-22 01:17:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:46,259 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 331 transitions. [2020-10-22 01:17:46,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:17:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 331 transitions. [2020-10-22 01:17:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:46,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:46,259 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:46,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:46,462 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:46,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1183744984, now seen corresponding path program 35 times [2020-10-22 01:17:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:46,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130764031] [2020-10-22 01:17:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:46,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130764031] [2020-10-22 01:17:46,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928378863] [2020-10-22 01:17:46,538 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:46,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:17:46,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:46,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:46,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:46,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:46,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:46,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:46,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2130676667] [2020-10-22 01:17:46,700 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:46,701 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:46,703 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:17:46,703 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:55,511 WARN L193 SmtUtils]: Spent 8.79 s on a formula simplification. DAG size of input: 36 DAG size of output: 6 [2020-10-22 01:17:55,546 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:55,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:55,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:55,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:55,547 INFO L87 Difference]: Start difference. First operand 131 states and 331 transitions. Second operand 9 states. [2020-10-22 01:17:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:55,822 INFO L93 Difference]: Finished difference Result 172 states and 407 transitions. [2020-10-22 01:17:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:55,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:55,823 INFO L225 Difference]: With dead ends: 172 [2020-10-22 01:17:55,823 INFO L226 Difference]: Without dead ends: 167 [2020-10-22 01:17:55,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:17:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-22 01:17:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-22 01:17:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-22 01:17:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 317 transitions. [2020-10-22 01:17:55,828 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 317 transitions. Word has length 13 [2020-10-22 01:17:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:55,829 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 317 transitions. [2020-10-22 01:17:55,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 317 transitions. [2020-10-22 01:17:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:55,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:55,830 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:56,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-22 01:17:56,041 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2047031252, now seen corresponding path program 36 times [2020-10-22 01:17:56,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:56,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148944691] [2020-10-22 01:17:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:56,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148944691] [2020-10-22 01:17:56,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201464961] [2020-10-22 01:17:56,122 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:56,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:17:56,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:56,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:56,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:56,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:56,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:56,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:56,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1896911930] [2020-10-22 01:17:56,285 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:56,286 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:56,288 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-22 01:17:56,288 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:58,449 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-22 01:17:58,526 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [19843#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0)), 19844#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 9)), 19845#(and (<= (+ (* 3 ~i~0) ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0)), 19846#(and (<= (+ (* 4 ~i~0) ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:58,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 01:17:58,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:58,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 01:17:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:17:58,528 INFO L87 Difference]: Start difference. First operand 129 states and 317 transitions. Second operand 13 states. [2020-10-22 01:17:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:58,938 INFO L93 Difference]: Finished difference Result 208 states and 490 transitions. [2020-10-22 01:17:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-22 01:17:58,939 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-10-22 01:17:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:58,941 INFO L225 Difference]: With dead ends: 208 [2020-10-22 01:17:58,941 INFO L226 Difference]: Without dead ends: 203 [2020-10-22 01:17:58,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2020-10-22 01:17:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-22 01:17:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 135. [2020-10-22 01:17:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-22 01:17:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 341 transitions. [2020-10-22 01:17:58,945 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 341 transitions. Word has length 13 [2020-10-22 01:17:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:58,945 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 341 transitions. [2020-10-22 01:17:58,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 01:17:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 341 transitions. [2020-10-22 01:17:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:58,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:58,946 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:59,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:59,157 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2047027408, now seen corresponding path program 37 times [2020-10-22 01:17:59,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:59,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072356494] [2020-10-22 01:17:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:59,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072356494] [2020-10-22 01:17:59,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410454283] [2020-10-22 01:17:59,235 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:59,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:59,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:59,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:59,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:59,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1161956756] [2020-10-22 01:17:59,420 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:59,421 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:59,423 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:17:59,424 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:59,515 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:59,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:59,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:59,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:59,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:59,516 INFO L87 Difference]: Start difference. First operand 135 states and 341 transitions. Second operand 9 states. [2020-10-22 01:17:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:59,869 INFO L93 Difference]: Finished difference Result 196 states and 473 transitions. [2020-10-22 01:17:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:59,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:59,872 INFO L225 Difference]: With dead ends: 196 [2020-10-22 01:17:59,872 INFO L226 Difference]: Without dead ends: 191 [2020-10-22 01:17:59,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:17:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-22 01:17:59,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 134. [2020-10-22 01:17:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-22 01:17:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2020-10-22 01:17:59,878 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 13 [2020-10-22 01:17:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:59,879 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2020-10-22 01:17:59,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2020-10-22 01:17:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:59,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:59,880 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:00,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-22 01:18:00,092 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:00,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2046912088, now seen corresponding path program 38 times [2020-10-22 01:18:00,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:00,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312661584] [2020-10-22 01:18:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:00,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312661584] [2020-10-22 01:18:00,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521850581] [2020-10-22 01:18:00,189 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:00,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:00,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:00,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:00,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:00,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:01,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:01,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:18:01,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [214979229] [2020-10-22 01:18:01,800 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:01,801 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:01,802 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:18:01,802 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:01,904 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20934#(and (<= (+ ~i~0 ~j~0) 12) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:01,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:18:01,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:01,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:18:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=201, Unknown=1, NotChecked=0, Total=272 [2020-10-22 01:18:01,905 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand 10 states. [2020-10-22 01:18:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:09,255 INFO L93 Difference]: Finished difference Result 206 states and 494 transitions. [2020-10-22 01:18:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:09,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:18:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:09,258 INFO L225 Difference]: With dead ends: 206 [2020-10-22 01:18:09,258 INFO L226 Difference]: Without dead ends: 201 [2020-10-22 01:18:09,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=187, Invalid=458, Unknown=5, NotChecked=0, Total=650 [2020-10-22 01:18:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-22 01:18:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 137. [2020-10-22 01:18:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-22 01:18:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 349 transitions. [2020-10-22 01:18:09,263 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 349 transitions. Word has length 13 [2020-10-22 01:18:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:09,263 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 349 transitions. [2020-10-22 01:18:09,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:18:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 349 transitions. [2020-10-22 01:18:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:09,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:09,265 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:09,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-22 01:18:09,470 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash -2046908244, now seen corresponding path program 39 times [2020-10-22 01:18:09,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:09,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047468599] [2020-10-22 01:18:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:09,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047468599] [2020-10-22 01:18:09,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981163721] [2020-10-22 01:18:09,549 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:09,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:18:09,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:09,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:09,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:09,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:09,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:09,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:09,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1886912062] [2020-10-22 01:18:09,716 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:09,717 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:09,719 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:18:09,719 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:09,793 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:09,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:09,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:09,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:09,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:09,794 INFO L87 Difference]: Start difference. First operand 137 states and 349 transitions. Second operand 9 states. [2020-10-22 01:18:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:10,067 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2020-10-22 01:18:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:10,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:10,069 INFO L225 Difference]: With dead ends: 206 [2020-10-22 01:18:10,070 INFO L226 Difference]: Without dead ends: 201 [2020-10-22 01:18:10,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-22 01:18:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 135. [2020-10-22 01:18:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-22 01:18:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-22 01:18:10,074 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-22 01:18:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:10,074 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-22 01:18:10,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-22 01:18:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:10,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:10,075 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:10,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-22 01:18:10,285 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:10,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2043337168, now seen corresponding path program 40 times [2020-10-22 01:18:10,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:10,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086650193] [2020-10-22 01:18:10,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:10,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086650193] [2020-10-22 01:18:10,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476637222] [2020-10-22 01:18:10,363 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:10,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:18:10,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:10,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:10,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:10,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:10,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:10,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:10,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [427705535] [2020-10-22 01:18:10,524 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:10,525 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:10,527 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-22 01:18:10,527 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:12,653 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:18:14,726 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:18:14,741 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [22029#(and (<= (+ ~i~0 ~j~0) 13) (= ULTIMATE.start_main_~condI~0 0)), 22030#(and (<= (+ (* 2 ~i~0) ~j~0) 13) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:14,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:18:14,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:18:14,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:18:14,743 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 11 states. [2020-10-22 01:18:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:15,066 INFO L93 Difference]: Finished difference Result 202 states and 483 transitions. [2020-10-22 01:18:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:15,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-22 01:18:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:15,068 INFO L225 Difference]: With dead ends: 202 [2020-10-22 01:18:15,068 INFO L226 Difference]: Without dead ends: 197 [2020-10-22 01:18:15,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:18:15,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-22 01:18:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 134. [2020-10-22 01:18:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-22 01:18:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 347 transitions. [2020-10-22 01:18:15,072 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 347 transitions. Word has length 13 [2020-10-22 01:18:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:15,072 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 347 transitions. [2020-10-22 01:18:15,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:18:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 347 transitions. [2020-10-22 01:18:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:15,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:15,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:15,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-10-22 01:18:15,283 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2043333324, now seen corresponding path program 41 times [2020-10-22 01:18:15,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:15,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111236694] [2020-10-22 01:18:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111236694] [2020-10-22 01:18:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662726212] [2020-10-22 01:18:15,366 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:15,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:18:15,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:15,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:15,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:15,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:15,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:15,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:15,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1881101565] [2020-10-22 01:18:15,527 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:15,528 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:15,530 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:18:15,530 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:15,608 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:15,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:15,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:15,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:15,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:15,609 INFO L87 Difference]: Start difference. First operand 134 states and 347 transitions. Second operand 9 states. [2020-10-22 01:18:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:15,918 INFO L93 Difference]: Finished difference Result 203 states and 484 transitions. [2020-10-22 01:18:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:15,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:15,921 INFO L225 Difference]: With dead ends: 203 [2020-10-22 01:18:15,921 INFO L226 Difference]: Without dead ends: 198 [2020-10-22 01:18:15,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-22 01:18:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 133. [2020-10-22 01:18:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-22 01:18:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 342 transitions. [2020-10-22 01:18:15,925 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 342 transitions. Word has length 13 [2020-10-22 01:18:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:15,925 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 342 transitions. [2020-10-22 01:18:15,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 342 transitions. [2020-10-22 01:18:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:15,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:15,926 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:16,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:16,126 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2043218004, now seen corresponding path program 42 times [2020-10-22 01:18:16,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:16,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017726001] [2020-10-22 01:18:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:16,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017726001] [2020-10-22 01:18:16,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205423538] [2020-10-22 01:18:16,208 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:16,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:18:16,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:16,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:16,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:16,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:16,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:16,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:16,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [655622912] [2020-10-22 01:18:16,407 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:16,409 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:16,410 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:18:16,410 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:17,045 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-22 01:18:17,058 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23108#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:17,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:18:17,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:17,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:18:17,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:18:17,060 INFO L87 Difference]: Start difference. First operand 133 states and 342 transitions. Second operand 10 states. [2020-10-22 01:18:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:17,372 INFO L93 Difference]: Finished difference Result 201 states and 477 transitions. [2020-10-22 01:18:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:17,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:18:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:17,374 INFO L225 Difference]: With dead ends: 201 [2020-10-22 01:18:17,374 INFO L226 Difference]: Without dead ends: 196 [2020-10-22 01:18:17,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:18:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-22 01:18:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 135. [2020-10-22 01:18:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-22 01:18:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-22 01:18:17,377 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-22 01:18:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:17,378 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-22 01:18:17,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:18:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-22 01:18:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:17,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:17,379 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:17,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:17,580 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2043214160, now seen corresponding path program 43 times [2020-10-22 01:18:17,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:17,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980612663] [2020-10-22 01:18:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:17,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980612663] [2020-10-22 01:18:17,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407513844] [2020-10-22 01:18:17,666 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:17,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:17,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:17,864 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:17,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:17,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:17,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [176557035] [2020-10-22 01:18:17,875 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:17,876 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:17,878 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:18:17,879 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:17,956 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:17,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:17,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:17,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:17,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:17,958 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-22 01:18:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:18,227 INFO L93 Difference]: Finished difference Result 197 states and 469 transitions. [2020-10-22 01:18:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:18,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:18,229 INFO L225 Difference]: With dead ends: 197 [2020-10-22 01:18:18,230 INFO L226 Difference]: Without dead ends: 192 [2020-10-22 01:18:18,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:18:18,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-22 01:18:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 132. [2020-10-22 01:18:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:18:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 324 transitions. [2020-10-22 01:18:18,233 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 324 transitions. Word has length 13 [2020-10-22 01:18:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:18,233 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 324 transitions. [2020-10-22 01:18:18,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 324 transitions. [2020-10-22 01:18:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:18,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:18,234 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:18,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-22 01:18:18,444 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:18,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1932514648, now seen corresponding path program 44 times [2020-10-22 01:18:18,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:18,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725471418] [2020-10-22 01:18:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:18,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725471418] [2020-10-22 01:18:18,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141637055] [2020-10-22 01:18:18,519 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:18,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:18,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:18,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:18,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:18,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:18,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:18,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:18,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [520787791] [2020-10-22 01:18:18,700 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:18,701 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:18,702 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 39 transitions. [2020-10-22 01:18:18,702 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:24,311 WARN L193 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:18:24,788 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 7 [2020-10-22 01:18:24,837 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [24179#(and (<= (+ ~i~0 ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0)), 24180#(and (<= (+ (* 2 ~i~0) ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0)), 24181#(and (<= (+ (* 3 ~i~0) ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:24,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:18:24,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:18:24,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:18:24,839 INFO L87 Difference]: Start difference. First operand 132 states and 324 transitions. Second operand 12 states. [2020-10-22 01:18:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:25,199 INFO L93 Difference]: Finished difference Result 219 states and 505 transitions. [2020-10-22 01:18:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-22 01:18:25,199 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-22 01:18:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:25,200 INFO L225 Difference]: With dead ends: 219 [2020-10-22 01:18:25,200 INFO L226 Difference]: Without dead ends: 214 [2020-10-22 01:18:25,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2020-10-22 01:18:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-22 01:18:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 134. [2020-10-22 01:18:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-22 01:18:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 325 transitions. [2020-10-22 01:18:25,204 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 325 transitions. Word has length 13 [2020-10-22 01:18:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:25,204 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 325 transitions. [2020-10-22 01:18:25,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:18:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 325 transitions. [2020-10-22 01:18:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:25,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:25,205 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:25,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:25,414 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:25,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:25,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1932510804, now seen corresponding path program 45 times [2020-10-22 01:18:25,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:25,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054220623] [2020-10-22 01:18:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:25,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054220623] [2020-10-22 01:18:25,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614517303] [2020-10-22 01:18:25,496 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:25,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:18:25,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:25,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:25,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:25,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:25,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:31,962 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-10-22 01:18:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:31,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:31,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:18:31,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1603533888] [2020-10-22 01:18:31,964 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:31,965 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:31,967 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-22 01:18:31,967 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:36,897 WARN L193 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:18:42,681 WARN L193 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 38 DAG size of output: 7 [2020-10-22 01:18:42,745 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:42,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:42,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:42,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:42,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-10-22 01:18:42,747 INFO L87 Difference]: Start difference. First operand 134 states and 325 transitions. Second operand 9 states. Received shutdown request... [2020-10-22 01:18:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:18:45,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-22 01:18:45,137 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-22 01:18:45,142 WARN L235 ceAbstractionStarter]: Timeout [2020-10-22 01:18:45,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:18:45 BasicIcfg [2020-10-22 01:18:45,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:18:45,144 INFO L168 Benchmark]: Toolchain (without parser) took 278131.55 ms. Allocated memory was 145.2 MB in the beginning and 234.9 MB in the end (delta: 89.7 MB). Free memory was 99.8 MB in the beginning and 137.8 MB in the end (delta: -38.0 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,144 INFO L168 Benchmark]: CDTParser took 3.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.12 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 98.9 MB in the beginning and 156.7 MB in the end (delta: -57.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.75 ms. Allocated memory is still 200.8 MB. Free memory was 156.7 MB in the beginning and 154.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,145 INFO L168 Benchmark]: Boogie Preprocessor took 30.80 ms. Allocated memory is still 200.8 MB. Free memory was 154.7 MB in the beginning and 152.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,145 INFO L168 Benchmark]: RCFGBuilder took 420.49 ms. Allocated memory is still 200.8 MB. Free memory was 152.7 MB in the beginning and 129.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,146 INFO L168 Benchmark]: TraceAbstraction took 276793.10 ms. Allocated memory was 200.8 MB in the beginning and 234.9 MB in the end (delta: 34.1 MB). Free memory was 129.8 MB in the beginning and 137.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:45,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.12 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 98.9 MB in the beginning and 156.7 MB in the end (delta: -57.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.75 ms. Allocated memory is still 200.8 MB. Free memory was 156.7 MB in the beginning and 154.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.80 ms. Allocated memory is still 200.8 MB. Free memory was 154.7 MB in the beginning and 152.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.49 ms. Allocated memory is still 200.8 MB. Free memory was 152.7 MB in the beginning and 129.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 276793.10 ms. Allocated memory was 200.8 MB in the beginning and 234.9 MB in the end (delta: 34.1 MB). Free memory was 129.8 MB in the beginning and 137.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 713 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 17 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 1215 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (134states) and FLOYD_HOARE automaton (currently 10 states, 9 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 276.6s, OverallIterations: 56, TraceHistogramMax: 5, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 726 SDtfs, 4101 SDslu, 3908 SDs, 0 SdLazy, 2929 SolverSat, 742 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1639 GetRequests, 544 SyntacticMatches, 45 SemanticMatches, 1049 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4349 ImplicationChecksByTransitivity, 64.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 55 MinimizatonAttempts, 2270 StatesRemovedByMinimization, 55 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 1280 NumberOfCodeBlocks, 1280 NumberOfCodeBlocksAsserted, 163 NumberOfCheckSat, 1173 ConstructedInterpolants, 8 QuantifiedInterpolants, 110361 SizeOfPredicates, 51 NumberOfNonLiveVariables, 5025 ConjunctsInSsa, 476 ConjunctsInUnsatCore, 107 InterpolantComputations, 5 PerfectInterpolantSequences, 0/380 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown