/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/memsafety/lockfree-3.0.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:58:16,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:58:16,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:58:16,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:58:16,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:58:16,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:58:16,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:58:16,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:58:16,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:58:16,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:58:16,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:58:16,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:58:16,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:58:16,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:58:16,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:58:16,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:58:16,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:58:16,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:58:16,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:58:16,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:58:16,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:58:16,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:58:16,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:58:16,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:58:16,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 16:58:16,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 16:58:16,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 16:58:16,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 16:58:16,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 16:58:16,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 16:58:16,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:58:16,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:58:16,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:58:16,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:58:16,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:58:16,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:58:16,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:58:16,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:58:16,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:58:16,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:58:16,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:58:16,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:58:16,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:58:16,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:58:16,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:58:16,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:58:16,917 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:58:16,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:58:16,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:58:16,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:58:16,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:58:16,918 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:58:16,919 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:58:16,919 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:58:16,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:58:16,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:58:16,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:58:16,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:58:16,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:58:16,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:58:16,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:58:16,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:58:16,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:58:16,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:58:16,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:58:16,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:58:16,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:58:17,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:58:17,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:58:17,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:58:17,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:58:17,341 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:58:17,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.0.i [2020-12-23 16:58:17,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/11f61249d/15c3f0ca7abd4833ba43d991ae79fa4b/FLAG01407c145 [2020-12-23 16:58:18,169 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:58:18,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2020-12-23 16:58:18,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/11f61249d/15c3f0ca7abd4833ba43d991ae79fa4b/FLAG01407c145 [2020-12-23 16:58:18,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/11f61249d/15c3f0ca7abd4833ba43d991ae79fa4b [2020-12-23 16:58:18,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:58:18,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:58:18,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:58:18,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:58:18,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:58:18,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97f6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18, skipping insertion in model container [2020-12-23 16:58:18,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:58:18,273 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~x1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~res4~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] [2020-12-23 16:58:18,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:58:18,645 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~x1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~res4~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] [2020-12-23 16:58:18,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:58:18,760 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:58:18,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18 WrapperNode [2020-12-23 16:58:18,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:58:18,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:58:18,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:58:18,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:58:18,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:58:18,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:58:18,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:58:18,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:58:18,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... [2020-12-23 16:58:18,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:58:18,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:58:18,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:58:18,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:58:18,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:58:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:58:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:58:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:58:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:58:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:58:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:58:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:58:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:58:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:58:19,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:58:19,736 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 16:58:19,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:58:19 BoogieIcfgContainer [2020-12-23 16:58:19,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:58:19,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:58:19,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:58:19,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:58:19,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:58:18" (1/3) ... [2020-12-23 16:58:19,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8577c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:58:19, skipping insertion in model container [2020-12-23 16:58:19,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:58:18" (2/3) ... [2020-12-23 16:58:19,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8577c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:58:19, skipping insertion in model container [2020-12-23 16:58:19,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:58:19" (3/3) ... [2020-12-23 16:58:19,749 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.0.i [2020-12-23 16:58:19,758 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:58:19,764 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-23 16:58:19,789 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-23 16:58:19,816 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:58:19,816 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:58:19,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:58:19,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:58:19,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:58:19,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:58:19,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:58:19,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:58:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-12-23 16:58:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 16:58:19,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:19,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 16:58:19,845 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:19,852 INFO L82 PathProgramCache]: Analyzing trace with hash 28817120, now seen corresponding path program 1 times [2020-12-23 16:58:19,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:19,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382190586] [2020-12-23 16:58:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382190586] [2020-12-23 16:58:20,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:20,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299803215] [2020-12-23 16:58:20,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 16:58:20,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 16:58:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:58:20,064 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-12-23 16:58:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,082 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-12-23 16:58:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 16:58:20,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-23 16:58:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,095 INFO L225 Difference]: With dead ends: 62 [2020-12-23 16:58:20,096 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 16:58:20,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:58:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 16:58:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-23 16:58:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 16:58:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2020-12-23 16:58:20,141 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 5 [2020-12-23 16:58:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,141 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2020-12-23 16:58:20,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 16:58:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2020-12-23 16:58:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:58:20,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:58:20,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1806850988, now seen corresponding path program 1 times [2020-12-23 16:58:20,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573401065] [2020-12-23 16:58:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573401065] [2020-12-23 16:58:20,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:58:20,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31355825] [2020-12-23 16:58:20,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:20,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:20,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,205 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2020-12-23 16:58:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,235 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2020-12-23 16:58:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:20,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:58:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,238 INFO L225 Difference]: With dead ends: 61 [2020-12-23 16:58:20,238 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 16:58:20,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 16:58:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-23 16:58:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 16:58:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-12-23 16:58:20,248 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 7 [2020-12-23 16:58:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,249 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-12-23 16:58:20,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-12-23 16:58:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:58:20,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:58:20,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910570, now seen corresponding path program 1 times [2020-12-23 16:58:20,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871042142] [2020-12-23 16:58:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871042142] [2020-12-23 16:58:20,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:20,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923943104] [2020-12-23 16:58:20,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:20,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:20,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,331 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 3 states. [2020-12-23 16:58:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,420 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-12-23 16:58:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:20,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:58:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,423 INFO L225 Difference]: With dead ends: 107 [2020-12-23 16:58:20,426 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 16:58:20,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 16:58:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-12-23 16:58:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 16:58:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 133 transitions. [2020-12-23 16:58:20,443 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 133 transitions. Word has length 7 [2020-12-23 16:58:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,443 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 133 transitions. [2020-12-23 16:58:20,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 133 transitions. [2020-12-23 16:58:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:58:20,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:58:20,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2020-12-23 16:58:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71419647] [2020-12-23 16:58:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71419647] [2020-12-23 16:58:20,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:58:20,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596776612] [2020-12-23 16:58:20,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:58:20,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:58:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:58:20,502 INFO L87 Difference]: Start difference. First operand 89 states and 133 transitions. Second operand 4 states. [2020-12-23 16:58:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,560 INFO L93 Difference]: Finished difference Result 97 states and 142 transitions. [2020-12-23 16:58:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:58:20,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 16:58:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,562 INFO L225 Difference]: With dead ends: 97 [2020-12-23 16:58:20,562 INFO L226 Difference]: Without dead ends: 97 [2020-12-23 16:58:20,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-23 16:58:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2020-12-23 16:58:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-23 16:58:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 135 transitions. [2020-12-23 16:58:20,572 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 135 transitions. Word has length 8 [2020-12-23 16:58:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,572 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 135 transitions. [2020-12-23 16:58:20,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:58:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 135 transitions. [2020-12-23 16:58:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:58:20,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:58:20,574 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash 179651426, now seen corresponding path program 1 times [2020-12-23 16:58:20,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848021364] [2020-12-23 16:58:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848021364] [2020-12-23 16:58:20,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:20,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047212209] [2020-12-23 16:58:20,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:20,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:20,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,620 INFO L87 Difference]: Start difference. First operand 91 states and 135 transitions. Second operand 3 states. [2020-12-23 16:58:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,684 INFO L93 Difference]: Finished difference Result 169 states and 253 transitions. [2020-12-23 16:58:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:20,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 16:58:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,687 INFO L225 Difference]: With dead ends: 169 [2020-12-23 16:58:20,687 INFO L226 Difference]: Without dead ends: 166 [2020-12-23 16:58:20,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-23 16:58:20,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 145. [2020-12-23 16:58:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-23 16:58:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 238 transitions. [2020-12-23 16:58:20,718 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 238 transitions. Word has length 8 [2020-12-23 16:58:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,719 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 238 transitions. [2020-12-23 16:58:20,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 238 transitions. [2020-12-23 16:58:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:58:20,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:58:20,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,721 INFO L82 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2020-12-23 16:58:20,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083345243] [2020-12-23 16:58:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083345243] [2020-12-23 16:58:20,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:20,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016987512] [2020-12-23 16:58:20,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:20,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:20,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,792 INFO L87 Difference]: Start difference. First operand 145 states and 238 transitions. Second operand 3 states. [2020-12-23 16:58:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,857 INFO L93 Difference]: Finished difference Result 219 states and 343 transitions. [2020-12-23 16:58:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:20,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 16:58:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,860 INFO L225 Difference]: With dead ends: 219 [2020-12-23 16:58:20,860 INFO L226 Difference]: Without dead ends: 219 [2020-12-23 16:58:20,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-23 16:58:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 196. [2020-12-23 16:58:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-23 16:58:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 328 transitions. [2020-12-23 16:58:20,874 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 328 transitions. Word has length 8 [2020-12-23 16:58:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,875 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 328 transitions. [2020-12-23 16:58:20,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 328 transitions. [2020-12-23 16:58:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:58:20,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:58:20,876 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2020-12-23 16:58:20,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456458464] [2020-12-23 16:58:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:20,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456458464] [2020-12-23 16:58:20,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:20,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:58:20,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920925450] [2020-12-23 16:58:20,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:20,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:20,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,927 INFO L87 Difference]: Start difference. First operand 196 states and 328 transitions. Second operand 3 states. [2020-12-23 16:58:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:20,978 INFO L93 Difference]: Finished difference Result 214 states and 334 transitions. [2020-12-23 16:58:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:20,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 16:58:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:20,981 INFO L225 Difference]: With dead ends: 214 [2020-12-23 16:58:20,981 INFO L226 Difference]: Without dead ends: 214 [2020-12-23 16:58:20,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:58:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-23 16:58:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 194. [2020-12-23 16:58:20,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-12-23 16:58:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 320 transitions. [2020-12-23 16:58:20,992 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 320 transitions. Word has length 8 [2020-12-23 16:58:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:20,992 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 320 transitions. [2020-12-23 16:58:20,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 320 transitions. [2020-12-23 16:58:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:58:20,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:20,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:20,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 16:58:20,994 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2020-12-23 16:58:20,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:20,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618744757] [2020-12-23 16:58:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:21,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618744757] [2020-12-23 16:58:21,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:21,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:58:21,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958721] [2020-12-23 16:58:21,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:58:21,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:21,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:58:21,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:58:21,030 INFO L87 Difference]: Start difference. First operand 194 states and 320 transitions. Second operand 4 states. [2020-12-23 16:58:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:21,067 INFO L93 Difference]: Finished difference Result 251 states and 352 transitions. [2020-12-23 16:58:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:58:21,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 16:58:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:21,069 INFO L225 Difference]: With dead ends: 251 [2020-12-23 16:58:21,069 INFO L226 Difference]: Without dead ends: 251 [2020-12-23 16:58:21,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-23 16:58:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 153. [2020-12-23 16:58:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-23 16:58:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 244 transitions. [2020-12-23 16:58:21,077 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 244 transitions. Word has length 9 [2020-12-23 16:58:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:21,078 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 244 transitions. [2020-12-23 16:58:21,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:58:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 244 transitions. [2020-12-23 16:58:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:58:21,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:21,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:21,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:58:21,079 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:21,080 INFO L82 PathProgramCache]: Analyzing trace with hash 844095278, now seen corresponding path program 1 times [2020-12-23 16:58:21,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:21,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008032194] [2020-12-23 16:58:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:21,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008032194] [2020-12-23 16:58:21,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:21,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:58:21,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078087230] [2020-12-23 16:58:21,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:58:21,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:21,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:58:21,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:58:21,115 INFO L87 Difference]: Start difference. First operand 153 states and 244 transitions. Second operand 4 states. [2020-12-23 16:58:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:21,151 INFO L93 Difference]: Finished difference Result 330 states and 496 transitions. [2020-12-23 16:58:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:58:21,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 16:58:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:21,153 INFO L225 Difference]: With dead ends: 330 [2020-12-23 16:58:21,153 INFO L226 Difference]: Without dead ends: 330 [2020-12-23 16:58:21,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-12-23 16:58:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 214. [2020-12-23 16:58:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-23 16:58:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 336 transitions. [2020-12-23 16:58:21,162 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 336 transitions. Word has length 10 [2020-12-23 16:58:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:21,163 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 336 transitions. [2020-12-23 16:58:21,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:58:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 336 transitions. [2020-12-23 16:58:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:58:21,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:21,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:21,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 16:58:21,164 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash -359933169, now seen corresponding path program 1 times [2020-12-23 16:58:21,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:21,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881439577] [2020-12-23 16:58:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:21,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881439577] [2020-12-23 16:58:21,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043162228] [2020-12-23 16:58:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:21,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:58:21,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:21,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:21,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 16:58:21,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984844455] [2020-12-23 16:58:21,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:58:21,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:21,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:58:21,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:21,405 INFO L87 Difference]: Start difference. First operand 214 states and 336 transitions. Second operand 6 states. [2020-12-23 16:58:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:21,478 INFO L93 Difference]: Finished difference Result 218 states and 326 transitions. [2020-12-23 16:58:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:58:21,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 16:58:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:21,481 INFO L225 Difference]: With dead ends: 218 [2020-12-23 16:58:21,481 INFO L226 Difference]: Without dead ends: 218 [2020-12-23 16:58:21,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:58:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-23 16:58:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2020-12-23 16:58:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-23 16:58:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 324 transitions. [2020-12-23 16:58:21,489 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 324 transitions. Word has length 15 [2020-12-23 16:58:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:21,489 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 324 transitions. [2020-12-23 16:58:21,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:58:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 324 transitions. [2020-12-23 16:58:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:58:21,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:21,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:21,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:58:21,706 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1076944598, now seen corresponding path program 1 times [2020-12-23 16:58:21,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:21,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661098691] [2020-12-23 16:58:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:21,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661098691] [2020-12-23 16:58:21,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472142048] [2020-12-23 16:58:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:21,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:58:21,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:21,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:21,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 16:58:21,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335398308] [2020-12-23 16:58:21,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:58:21,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:21,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:58:21,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:58:21,920 INFO L87 Difference]: Start difference. First operand 210 states and 324 transitions. Second operand 7 states. [2020-12-23 16:58:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:21,999 INFO L93 Difference]: Finished difference Result 475 states and 688 transitions. [2020-12-23 16:58:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:58:22,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 16:58:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:22,003 INFO L225 Difference]: With dead ends: 475 [2020-12-23 16:58:22,003 INFO L226 Difference]: Without dead ends: 475 [2020-12-23 16:58:22,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:58:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-12-23 16:58:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 293. [2020-12-23 16:58:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 16:58:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 446 transitions. [2020-12-23 16:58:22,013 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 446 transitions. Word has length 15 [2020-12-23 16:58:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:22,013 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 446 transitions. [2020-12-23 16:58:22,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:58:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 446 transitions. [2020-12-23 16:58:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 16:58:22,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:22,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:22,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:22,231 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash 549808174, now seen corresponding path program 2 times [2020-12-23 16:58:22,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:22,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285375832] [2020-12-23 16:58:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:58:22,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285375832] [2020-12-23 16:58:22,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922788744] [2020-12-23 16:58:22,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:22,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:58:22,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:58:22,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:58:22,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:22,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:58:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:22,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:22,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-12-23 16:58:22,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688587600] [2020-12-23 16:58:22,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:58:22,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:22,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:58:22,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:58:22,496 INFO L87 Difference]: Start difference. First operand 293 states and 446 transitions. Second operand 8 states. [2020-12-23 16:58:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:22,703 INFO L93 Difference]: Finished difference Result 475 states and 676 transitions. [2020-12-23 16:58:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:58:22,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-23 16:58:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:22,707 INFO L225 Difference]: With dead ends: 475 [2020-12-23 16:58:22,707 INFO L226 Difference]: Without dead ends: 475 [2020-12-23 16:58:22,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:58:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-12-23 16:58:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 293. [2020-12-23 16:58:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 16:58:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 434 transitions. [2020-12-23 16:58:22,717 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 434 transitions. Word has length 20 [2020-12-23 16:58:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:22,718 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 434 transitions. [2020-12-23 16:58:22,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:58:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 434 transitions. [2020-12-23 16:58:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 16:58:22,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:22,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:22,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 16:58:22,935 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:22,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1068746165, now seen corresponding path program 1 times [2020-12-23 16:58:22,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:22,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520118628] [2020-12-23 16:58:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:23,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520118628] [2020-12-23 16:58:23,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390235278] [2020-12-23 16:58:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:23,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:58:23,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:23,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:23,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-23 16:58:23,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308185861] [2020-12-23 16:58:23,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:58:23,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:23,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:58:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:58:23,163 INFO L87 Difference]: Start difference. First operand 293 states and 434 transitions. Second operand 4 states. [2020-12-23 16:58:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:23,256 INFO L93 Difference]: Finished difference Result 852 states and 1250 transitions. [2020-12-23 16:58:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:58:23,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-23 16:58:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:23,263 INFO L225 Difference]: With dead ends: 852 [2020-12-23 16:58:23,263 INFO L226 Difference]: Without dead ends: 852 [2020-12-23 16:58:23,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-12-23 16:58:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 737. [2020-12-23 16:58:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-23 16:58:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1108 transitions. [2020-12-23 16:58:23,286 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1108 transitions. Word has length 22 [2020-12-23 16:58:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:23,286 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1108 transitions. [2020-12-23 16:58:23,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:58:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1108 transitions. [2020-12-23 16:58:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 16:58:23,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:23,288 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:23,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:23,502 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:23,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1500331496, now seen corresponding path program 1 times [2020-12-23 16:58:23,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:23,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055913487] [2020-12-23 16:58:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:23,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055913487] [2020-12-23 16:58:23,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142633097] [2020-12-23 16:58:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:23,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:58:23,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:23,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:23,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 16:58:23,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719044067] [2020-12-23 16:58:23,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:58:23,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:58:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:58:23,769 INFO L87 Difference]: Start difference. First operand 737 states and 1108 transitions. Second operand 7 states. [2020-12-23 16:58:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:23,852 INFO L93 Difference]: Finished difference Result 1279 states and 1808 transitions. [2020-12-23 16:58:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:58:23,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-23 16:58:23,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:23,860 INFO L225 Difference]: With dead ends: 1279 [2020-12-23 16:58:23,860 INFO L226 Difference]: Without dead ends: 1279 [2020-12-23 16:58:23,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:58:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-12-23 16:58:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1031. [2020-12-23 16:58:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-12-23 16:58:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1506 transitions. [2020-12-23 16:58:23,885 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1506 transitions. Word has length 25 [2020-12-23 16:58:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:23,886 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1506 transitions. [2020-12-23 16:58:23,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:58:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1506 transitions. [2020-12-23 16:58:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 16:58:23,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:23,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:24,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 16:58:24,101 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1328162967, now seen corresponding path program 1 times [2020-12-23 16:58:24,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:24,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533931154] [2020-12-23 16:58:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:58:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533931154] [2020-12-23 16:58:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382455331] [2020-12-23 16:58:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:24,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 16:58:24,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:24,313 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:58:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:58:24,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:24,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-12-23 16:58:24,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844536282] [2020-12-23 16:58:24,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:58:24,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:24,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:58:24,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:24,333 INFO L87 Difference]: Start difference. First operand 1031 states and 1506 transitions. Second operand 6 states. [2020-12-23 16:58:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:24,451 INFO L93 Difference]: Finished difference Result 813 states and 1115 transitions. [2020-12-23 16:58:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:58:24,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-23 16:58:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:24,456 INFO L225 Difference]: With dead ends: 813 [2020-12-23 16:58:24,457 INFO L226 Difference]: Without dead ends: 813 [2020-12-23 16:58:24,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:58:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-23 16:58:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 454. [2020-12-23 16:58:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-12-23 16:58:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 638 transitions. [2020-12-23 16:58:24,471 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 638 transitions. Word has length 25 [2020-12-23 16:58:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:24,471 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 638 transitions. [2020-12-23 16:58:24,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:58:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 638 transitions. [2020-12-23 16:58:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 16:58:24,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:24,473 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:24,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:24,688 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:24,689 INFO L82 PathProgramCache]: Analyzing trace with hash -694766621, now seen corresponding path program 1 times [2020-12-23 16:58:24,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:24,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314702388] [2020-12-23 16:58:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:58:24,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314702388] [2020-12-23 16:58:24,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104879598] [2020-12-23 16:58:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:24,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:58:24,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:24,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:24,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-12-23 16:58:24,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984112006] [2020-12-23 16:58:24,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:58:24,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:24,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:58:24,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:58:24,950 INFO L87 Difference]: Start difference. First operand 454 states and 638 transitions. Second operand 9 states. [2020-12-23 16:58:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:25,214 INFO L93 Difference]: Finished difference Result 960 states and 1274 transitions. [2020-12-23 16:58:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 16:58:25,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-23 16:58:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:25,219 INFO L225 Difference]: With dead ends: 960 [2020-12-23 16:58:25,219 INFO L226 Difference]: Without dead ends: 960 [2020-12-23 16:58:25,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:58:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-12-23 16:58:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 590. [2020-12-23 16:58:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-12-23 16:58:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 830 transitions. [2020-12-23 16:58:25,236 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 830 transitions. Word has length 32 [2020-12-23 16:58:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:25,237 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 830 transitions. [2020-12-23 16:58:25,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:58:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 830 transitions. [2020-12-23 16:58:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 16:58:25,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:25,240 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:25,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 16:58:25,456 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1206576598, now seen corresponding path program 1 times [2020-12-23 16:58:25,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:25,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123449691] [2020-12-23 16:58:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 16:58:25,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123449691] [2020-12-23 16:58:25,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180553552] [2020-12-23 16:58:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:25,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:58:25,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:25,700 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:58:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 16:58:25,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:25,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-23 16:58:25,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745868858] [2020-12-23 16:58:25,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:58:25,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:25,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:58:25,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:58:25,730 INFO L87 Difference]: Start difference. First operand 590 states and 830 transitions. Second operand 7 states. [2020-12-23 16:58:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:25,880 INFO L93 Difference]: Finished difference Result 1284 states and 1760 transitions. [2020-12-23 16:58:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:58:25,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-12-23 16:58:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:25,887 INFO L225 Difference]: With dead ends: 1284 [2020-12-23 16:58:25,887 INFO L226 Difference]: Without dead ends: 1284 [2020-12-23 16:58:25,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-23 16:58:25,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-12-23 16:58:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 699. [2020-12-23 16:58:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-12-23 16:58:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1004 transitions. [2020-12-23 16:58:25,906 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1004 transitions. Word has length 39 [2020-12-23 16:58:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:25,906 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1004 transitions. [2020-12-23 16:58:25,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:58:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1004 transitions. [2020-12-23 16:58:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 16:58:25,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:25,907 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:26,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 16:58:26,121 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2038387385, now seen corresponding path program 1 times [2020-12-23 16:58:26,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:26,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000095367] [2020-12-23 16:58:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:58:26,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000095367] [2020-12-23 16:58:26,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623985386] [2020-12-23 16:58:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:26,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 16:58:26,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:58:26,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:26,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2020-12-23 16:58:26,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302395403] [2020-12-23 16:58:26,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 16:58:26,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:26,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 16:58:26,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-12-23 16:58:26,432 INFO L87 Difference]: Start difference. First operand 699 states and 1004 transitions. Second operand 14 states. [2020-12-23 16:58:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:27,026 INFO L93 Difference]: Finished difference Result 1992 states and 2633 transitions. [2020-12-23 16:58:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:58:27,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-12-23 16:58:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:27,036 INFO L225 Difference]: With dead ends: 1992 [2020-12-23 16:58:27,036 INFO L226 Difference]: Without dead ends: 1992 [2020-12-23 16:58:27,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 16:58:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-12-23 16:58:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 980. [2020-12-23 16:58:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2020-12-23 16:58:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1343 transitions. [2020-12-23 16:58:27,064 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1343 transitions. Word has length 43 [2020-12-23 16:58:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:27,064 INFO L481 AbstractCegarLoop]: Abstraction has 980 states and 1343 transitions. [2020-12-23 16:58:27,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 16:58:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1343 transitions. [2020-12-23 16:58:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 16:58:27,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:27,065 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:27,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 16:58:27,281 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:27,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash -213326138, now seen corresponding path program 1 times [2020-12-23 16:58:27,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:27,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094384399] [2020-12-23 16:58:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:58:27,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094384399] [2020-12-23 16:58:27,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206873479] [2020-12-23 16:58:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:27,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 16:58:27,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:27,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:58:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 16:58:27,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:27,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2020-12-23 16:58:27,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008375528] [2020-12-23 16:58:27,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:58:27,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:27,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:58:27,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:58:27,557 INFO L87 Difference]: Start difference. First operand 980 states and 1343 transitions. Second operand 9 states. [2020-12-23 16:58:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:27,862 INFO L93 Difference]: Finished difference Result 2265 states and 3046 transitions. [2020-12-23 16:58:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:58:27,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-12-23 16:58:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:27,874 INFO L225 Difference]: With dead ends: 2265 [2020-12-23 16:58:27,874 INFO L226 Difference]: Without dead ends: 2265 [2020-12-23 16:58:27,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:58:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-12-23 16:58:27,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1234. [2020-12-23 16:58:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-12-23 16:58:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1736 transitions. [2020-12-23 16:58:27,908 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1736 transitions. Word has length 48 [2020-12-23 16:58:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:27,909 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1736 transitions. [2020-12-23 16:58:27,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:58:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1736 transitions. [2020-12-23 16:58:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 16:58:27,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:27,910 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:28,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:28,124 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:28,125 INFO L82 PathProgramCache]: Analyzing trace with hash -214544417, now seen corresponding path program 1 times [2020-12-23 16:58:28,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:28,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247313365] [2020-12-23 16:58:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 33 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-23 16:58:28,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247313365] [2020-12-23 16:58:28,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165646010] [2020-12-23 16:58:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:28,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:58:28,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 33 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-23 16:58:28,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:28,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-12-23 16:58:28,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123935996] [2020-12-23 16:58:28,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:58:28,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:28,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:58:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:28,377 INFO L87 Difference]: Start difference. First operand 1234 states and 1736 transitions. Second operand 5 states. [2020-12-23 16:58:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:28,488 INFO L93 Difference]: Finished difference Result 2083 states and 2961 transitions. [2020-12-23 16:58:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:58:28,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-23 16:58:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:28,499 INFO L225 Difference]: With dead ends: 2083 [2020-12-23 16:58:28,499 INFO L226 Difference]: Without dead ends: 2083 [2020-12-23 16:58:28,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:58:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-12-23 16:58:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2073. [2020-12-23 16:58:28,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-12-23 16:58:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2957 transitions. [2020-12-23 16:58:28,544 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2957 transitions. Word has length 58 [2020-12-23 16:58:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:28,544 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 2957 transitions. [2020-12-23 16:58:28,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:58:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2957 transitions. [2020-12-23 16:58:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 16:58:28,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:28,546 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:28,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:28,760 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:28,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1583318006, now seen corresponding path program 1 times [2020-12-23 16:58:28,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:28,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298819722] [2020-12-23 16:58:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-23 16:58:28,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298819722] [2020-12-23 16:58:28,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116371468] [2020-12-23 16:58:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:28,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 16:58:28,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:28,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:58:29,060 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:58:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 16:58:29,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:29,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2020-12-23 16:58:29,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949306461] [2020-12-23 16:58:29,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:58:29,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:58:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:58:29,079 INFO L87 Difference]: Start difference. First operand 2073 states and 2957 transitions. Second operand 9 states. [2020-12-23 16:58:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:29,496 INFO L93 Difference]: Finished difference Result 2760 states and 3770 transitions. [2020-12-23 16:58:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 16:58:29,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-12-23 16:58:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:29,509 INFO L225 Difference]: With dead ends: 2760 [2020-12-23 16:58:29,510 INFO L226 Difference]: Without dead ends: 2760 [2020-12-23 16:58:29,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:58:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2020-12-23 16:58:29,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1490. [2020-12-23 16:58:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-12-23 16:58:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2084 transitions. [2020-12-23 16:58:29,549 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2084 transitions. Word has length 59 [2020-12-23 16:58:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:29,549 INFO L481 AbstractCegarLoop]: Abstraction has 1490 states and 2084 transitions. [2020-12-23 16:58:29,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:58:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2084 transitions. [2020-12-23 16:58:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:58:29,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:29,551 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:29,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:29,766 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:29,766 INFO L82 PathProgramCache]: Analyzing trace with hash -988191337, now seen corresponding path program 1 times [2020-12-23 16:58:29,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:29,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790491945] [2020-12-23 16:58:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-23 16:58:29,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790491945] [2020-12-23 16:58:29,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106084379] [2020-12-23 16:58:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:29,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 16:58:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-23 16:58:30,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:30,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-23 16:58:30,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471516067] [2020-12-23 16:58:30,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:58:30,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:30,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:58:30,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:58:30,088 INFO L87 Difference]: Start difference. First operand 1490 states and 2084 transitions. Second operand 9 states. [2020-12-23 16:58:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:30,414 INFO L93 Difference]: Finished difference Result 3321 states and 4587 transitions. [2020-12-23 16:58:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:58:30,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-23 16:58:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:30,432 INFO L225 Difference]: With dead ends: 3321 [2020-12-23 16:58:30,432 INFO L226 Difference]: Without dead ends: 3321 [2020-12-23 16:58:30,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:58:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2020-12-23 16:58:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2860. [2020-12-23 16:58:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2020-12-23 16:58:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4012 transitions. [2020-12-23 16:58:30,501 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4012 transitions. Word has length 62 [2020-12-23 16:58:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:30,501 INFO L481 AbstractCegarLoop]: Abstraction has 2860 states and 4012 transitions. [2020-12-23 16:58:30,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:58:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4012 transitions. [2020-12-23 16:58:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:58:30,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:30,503 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:30,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 16:58:30,718 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:30,719 INFO L82 PathProgramCache]: Analyzing trace with hash -988191338, now seen corresponding path program 1 times [2020-12-23 16:58:30,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:30,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217570192] [2020-12-23 16:58:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-23 16:58:30,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217570192] [2020-12-23 16:58:30,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097199791] [2020-12-23 16:58:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:30,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:58:30,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:30,944 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:58:30,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:30,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:30,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:30,949 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 16:58:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-23 16:58:31,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:31,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-23 16:58:31,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674015295] [2020-12-23 16:58:31,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:58:31,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:31,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:58:31,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:58:31,014 INFO L87 Difference]: Start difference. First operand 2860 states and 4012 transitions. Second operand 5 states. [2020-12-23 16:58:31,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:31,228 INFO L93 Difference]: Finished difference Result 3999 states and 5539 transitions. [2020-12-23 16:58:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:58:31,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-23 16:58:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:31,247 INFO L225 Difference]: With dead ends: 3999 [2020-12-23 16:58:31,247 INFO L226 Difference]: Without dead ends: 3999 [2020-12-23 16:58:31,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:58:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2020-12-23 16:58:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3545. [2020-12-23 16:58:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-12-23 16:58:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4968 transitions. [2020-12-23 16:58:31,348 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4968 transitions. Word has length 62 [2020-12-23 16:58:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:31,349 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4968 transitions. [2020-12-23 16:58:31,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:58:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4968 transitions. [2020-12-23 16:58:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 16:58:31,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:31,351 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 8, 6, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:31,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:31,565 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:31,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1256876840, now seen corresponding path program 1 times [2020-12-23 16:58:31,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:31,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834637389] [2020-12-23 16:58:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-12-23 16:58:31,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834637389] [2020-12-23 16:58:31,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:58:31,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 16:58:31,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001883451] [2020-12-23 16:58:31,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:58:31,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:58:31,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:31,649 INFO L87 Difference]: Start difference. First operand 3545 states and 4968 transitions. Second operand 6 states. [2020-12-23 16:58:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:31,800 INFO L93 Difference]: Finished difference Result 7220 states and 10035 transitions. [2020-12-23 16:58:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:58:31,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-23 16:58:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:31,830 INFO L225 Difference]: With dead ends: 7220 [2020-12-23 16:58:31,830 INFO L226 Difference]: Without dead ends: 7220 [2020-12-23 16:58:31,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 16:58:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2020-12-23 16:58:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 3889. [2020-12-23 16:58:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3889 states. [2020-12-23 16:58:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5510 transitions. [2020-12-23 16:58:31,930 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5510 transitions. Word has length 79 [2020-12-23 16:58:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:31,931 INFO L481 AbstractCegarLoop]: Abstraction has 3889 states and 5510 transitions. [2020-12-23 16:58:31,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:58:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5510 transitions. [2020-12-23 16:58:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-23 16:58:31,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:31,934 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 9, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:31,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 16:58:31,935 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1007960541, now seen corresponding path program 1 times [2020-12-23 16:58:31,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:31,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971377007] [2020-12-23 16:58:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 71 proven. 121 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 16:58:32,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971377007] [2020-12-23 16:58:32,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249061683] [2020-12-23 16:58:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:32,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:58:32,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-23 16:58:32,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:58:32,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-23 16:58:32,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169278587] [2020-12-23 16:58:32,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:58:32,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:32,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:58:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:32,256 INFO L87 Difference]: Start difference. First operand 3889 states and 5510 transitions. Second operand 3 states. [2020-12-23 16:58:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:32,290 INFO L93 Difference]: Finished difference Result 4356 states and 6011 transitions. [2020-12-23 16:58:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:58:32,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-23 16:58:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:32,299 INFO L225 Difference]: With dead ends: 4356 [2020-12-23 16:58:32,300 INFO L226 Difference]: Without dead ends: 4356 [2020-12-23 16:58:32,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2020-12-23 16:58:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 3943. [2020-12-23 16:58:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2020-12-23 16:58:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5490 transitions. [2020-12-23 16:58:32,371 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5490 transitions. Word has length 86 [2020-12-23 16:58:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:32,371 INFO L481 AbstractCegarLoop]: Abstraction has 3943 states and 5490 transitions. [2020-12-23 16:58:32,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:58:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5490 transitions. [2020-12-23 16:58:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-23 16:58:32,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:32,375 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 9, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:32,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 16:58:32,590 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1571256936, now seen corresponding path program 1 times [2020-12-23 16:58:32,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:32,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672844939] [2020-12-23 16:58:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 74 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-12-23 16:58:32,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672844939] [2020-12-23 16:58:32,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931546847] [2020-12-23 16:58:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:32,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 16:58:32,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 69 proven. 64 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-12-23 16:58:32,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:32,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2020-12-23 16:58:32,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392503750] [2020-12-23 16:58:32,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:58:32,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:32,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:58:32,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:58:32,931 INFO L87 Difference]: Start difference. First operand 3943 states and 5490 transitions. Second operand 12 states. [2020-12-23 16:58:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:33,342 INFO L93 Difference]: Finished difference Result 4431 states and 5698 transitions. [2020-12-23 16:58:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 16:58:33,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-12-23 16:58:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:33,356 INFO L225 Difference]: With dead ends: 4431 [2020-12-23 16:58:33,356 INFO L226 Difference]: Without dead ends: 4431 [2020-12-23 16:58:33,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-12-23 16:58:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2020-12-23 16:58:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 2469. [2020-12-23 16:58:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-23 16:58:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3184 transitions. [2020-12-23 16:58:33,403 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3184 transitions. Word has length 88 [2020-12-23 16:58:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:33,403 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 3184 transitions. [2020-12-23 16:58:33,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:58:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3184 transitions. [2020-12-23 16:58:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 16:58:33,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:33,406 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:33,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:33,621 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:33,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:33,621 INFO L82 PathProgramCache]: Analyzing trace with hash -796469580, now seen corresponding path program 1 times [2020-12-23 16:58:33,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:33,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401398571] [2020-12-23 16:58:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-12-23 16:58:33,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401398571] [2020-12-23 16:58:33,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701914158] [2020-12-23 16:58:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:33,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 16:58:33,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:33,832 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:58:33,833 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:33,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:33,835 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:33,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 16:58:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:33,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:33,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 5 [2020-12-23 16:58:33,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559011984] [2020-12-23 16:58:33,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:58:33,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:33,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:58:33,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:33,984 INFO L87 Difference]: Start difference. First operand 2469 states and 3184 transitions. Second operand 6 states. [2020-12-23 16:58:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:34,373 INFO L93 Difference]: Finished difference Result 3669 states and 4677 transitions. [2020-12-23 16:58:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:58:34,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-12-23 16:58:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:34,384 INFO L225 Difference]: With dead ends: 3669 [2020-12-23 16:58:34,384 INFO L226 Difference]: Without dead ends: 3669 [2020-12-23 16:58:34,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:58:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2020-12-23 16:58:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 2470. [2020-12-23 16:58:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2470 states. [2020-12-23 16:58:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3187 transitions. [2020-12-23 16:58:34,429 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3187 transitions. Word has length 100 [2020-12-23 16:58:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:34,429 INFO L481 AbstractCegarLoop]: Abstraction has 2470 states and 3187 transitions. [2020-12-23 16:58:34,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:58:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3187 transitions. [2020-12-23 16:58:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 16:58:34,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:34,433 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:34,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 16:58:34,646 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash -796469579, now seen corresponding path program 1 times [2020-12-23 16:58:34,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:34,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130990063] [2020-12-23 16:58:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:34,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130990063] [2020-12-23 16:58:34,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849845748] [2020-12-23 16:58:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:34,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 16:58:34,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:35,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:35,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-12-23 16:58:35,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448274251] [2020-12-23 16:58:35,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 16:58:35,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:35,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 16:58:35,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 16:58:35,155 INFO L87 Difference]: Start difference. First operand 2470 states and 3187 transitions. Second operand 11 states. [2020-12-23 16:58:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:35,765 INFO L93 Difference]: Finished difference Result 5079 states and 6557 transitions. [2020-12-23 16:58:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:58:35,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-12-23 16:58:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:35,775 INFO L225 Difference]: With dead ends: 5079 [2020-12-23 16:58:35,775 INFO L226 Difference]: Without dead ends: 5079 [2020-12-23 16:58:35,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:58:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5079 states. [2020-12-23 16:58:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5079 to 2819. [2020-12-23 16:58:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2020-12-23 16:58:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3682 transitions. [2020-12-23 16:58:35,827 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3682 transitions. Word has length 100 [2020-12-23 16:58:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:35,827 INFO L481 AbstractCegarLoop]: Abstraction has 2819 states and 3682 transitions. [2020-12-23 16:58:35,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 16:58:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3682 transitions. [2020-12-23 16:58:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-23 16:58:35,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:35,831 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:36,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 16:58:36,046 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:36,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1079245400, now seen corresponding path program 1 times [2020-12-23 16:58:36,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:36,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784065971] [2020-12-23 16:58:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:36,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784065971] [2020-12-23 16:58:36,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244939331] [2020-12-23 16:58:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:36,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 16:58:36,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:36,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:36,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-12-23 16:58:36,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784323628] [2020-12-23 16:58:36,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:58:36,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:58:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:36,473 INFO L87 Difference]: Start difference. First operand 2819 states and 3682 transitions. Second operand 6 states. [2020-12-23 16:58:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:36,820 INFO L93 Difference]: Finished difference Result 5073 states and 6533 transitions. [2020-12-23 16:58:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:58:36,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-12-23 16:58:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:36,831 INFO L225 Difference]: With dead ends: 5073 [2020-12-23 16:58:36,831 INFO L226 Difference]: Without dead ends: 5073 [2020-12-23 16:58:36,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:58:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2020-12-23 16:58:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 2819. [2020-12-23 16:58:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2020-12-23 16:58:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3672 transitions. [2020-12-23 16:58:36,885 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3672 transitions. Word has length 101 [2020-12-23 16:58:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:36,886 INFO L481 AbstractCegarLoop]: Abstraction has 2819 states and 3672 transitions. [2020-12-23 16:58:36,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:58:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3672 transitions. [2020-12-23 16:58:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-23 16:58:36,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:36,890 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:37,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 16:58:37,105 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2069163900, now seen corresponding path program 1 times [2020-12-23 16:58:37,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:37,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098504266] [2020-12-23 16:58:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:37,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098504266] [2020-12-23 16:58:37,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015091671] [2020-12-23 16:58:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:37,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:58:37,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:37,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:37,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-12-23 16:58:37,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443243528] [2020-12-23 16:58:37,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:58:37,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:58:37,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:58:37,529 INFO L87 Difference]: Start difference. First operand 2819 states and 3672 transitions. Second operand 6 states. [2020-12-23 16:58:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:37,854 INFO L93 Difference]: Finished difference Result 5069 states and 6529 transitions. [2020-12-23 16:58:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:58:37,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-12-23 16:58:37,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:37,865 INFO L225 Difference]: With dead ends: 5069 [2020-12-23 16:58:37,865 INFO L226 Difference]: Without dead ends: 5069 [2020-12-23 16:58:37,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:58:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2020-12-23 16:58:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 2820. [2020-12-23 16:58:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2820 states. [2020-12-23 16:58:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3673 transitions. [2020-12-23 16:58:37,921 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3673 transitions. Word has length 103 [2020-12-23 16:58:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:37,922 INFO L481 AbstractCegarLoop]: Abstraction has 2820 states and 3673 transitions. [2020-12-23 16:58:37,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:58:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3673 transitions. [2020-12-23 16:58:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 16:58:37,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:37,925 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:38,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:38,137 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1485142690, now seen corresponding path program 1 times [2020-12-23 16:58:38,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:38,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268758397] [2020-12-23 16:58:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 78 proven. 290 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 16:58:38,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268758397] [2020-12-23 16:58:38,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326738875] [2020-12-23 16:58:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:38,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 16:58:38,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:38,688 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:38,689 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:38,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:38,701 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:38,702 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:38,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:38,709 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:38,710 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2020-12-23 16:58:38,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-23 16:58:38,804 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:38,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:38,816 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-23 16:58:38,817 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:38,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:38,824 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:38,825 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:10 [2020-12-23 16:58:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 78 proven. 290 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 16:58:38,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:38,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-23 16:58:38,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558299495] [2020-12-23 16:58:38,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:58:38,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:38,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:58:38,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:58:38,930 INFO L87 Difference]: Start difference. First operand 2820 states and 3673 transitions. Second operand 12 states. [2020-12-23 16:58:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:41,639 INFO L93 Difference]: Finished difference Result 16660 states and 21220 transitions. [2020-12-23 16:58:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-12-23 16:58:41,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-12-23 16:58:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:41,674 INFO L225 Difference]: With dead ends: 16660 [2020-12-23 16:58:41,675 INFO L226 Difference]: Without dead ends: 16660 [2020-12-23 16:58:41,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=696, Invalid=3726, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 16:58:41,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16660 states. [2020-12-23 16:58:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16660 to 9102. [2020-12-23 16:58:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9102 states. [2020-12-23 16:58:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9102 states to 9102 states and 11967 transitions. [2020-12-23 16:58:41,865 INFO L78 Accepts]: Start accepts. Automaton has 9102 states and 11967 transitions. Word has length 105 [2020-12-23 16:58:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:41,865 INFO L481 AbstractCegarLoop]: Abstraction has 9102 states and 11967 transitions. [2020-12-23 16:58:41,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:58:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9102 states and 11967 transitions. [2020-12-23 16:58:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-23 16:58:41,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:41,873 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:42,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:42,087 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1091289145, now seen corresponding path program 1 times [2020-12-23 16:58:42,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:42,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108439471] [2020-12-23 16:58:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 46 proven. 180 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:42,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108439471] [2020-12-23 16:58:42,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674461770] [2020-12-23 16:58:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 16:58:42,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:42,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:42,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:42,657 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:42,660 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:42,661 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:42,667 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:42,668 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:42,668 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2020-12-23 16:58:42,762 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:42,763 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-12-23 16:58:42,764 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:58:42,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:42,785 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:42,786 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-12-23 16:58:42,788 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-23 16:58:42,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:42,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:58:42,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:58:42,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:58:42,811 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 16:58:42,811 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:37 [2020-12-23 16:58:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-12-23 16:58:42,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:42,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2020-12-23 16:58:42,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970277637] [2020-12-23 16:58:42,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 16:58:42,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:42,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 16:58:42,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-12-23 16:58:42,900 INFO L87 Difference]: Start difference. First operand 9102 states and 11967 transitions. Second operand 16 states. [2020-12-23 16:58:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:43,552 INFO L93 Difference]: Finished difference Result 15747 states and 20349 transitions. [2020-12-23 16:58:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:58:43,553 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-12-23 16:58:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:43,585 INFO L225 Difference]: With dead ends: 15747 [2020-12-23 16:58:43,585 INFO L226 Difference]: Without dead ends: 15747 [2020-12-23 16:58:43,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:58:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15747 states. [2020-12-23 16:58:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15747 to 11547. [2020-12-23 16:58:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11547 states. [2020-12-23 16:58:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11547 states to 11547 states and 15172 transitions. [2020-12-23 16:58:43,862 INFO L78 Accepts]: Start accepts. Automaton has 11547 states and 15172 transitions. Word has length 106 [2020-12-23 16:58:43,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:43,863 INFO L481 AbstractCegarLoop]: Abstraction has 11547 states and 15172 transitions. [2020-12-23 16:58:43,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 16:58:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11547 states and 15172 transitions. [2020-12-23 16:58:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:58:43,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:43,872 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:44,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:44,086 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:44,087 INFO L82 PathProgramCache]: Analyzing trace with hash -529776269, now seen corresponding path program 1 times [2020-12-23 16:58:44,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:44,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858358495] [2020-12-23 16:58:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:44,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858358495] [2020-12-23 16:58:44,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394138659] [2020-12-23 16:58:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:44,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 16:58:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-23 16:58:44,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:44,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-12-23 16:58:44,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185512675] [2020-12-23 16:58:44,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:58:44,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:44,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:58:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:58:44,671 INFO L87 Difference]: Start difference. First operand 11547 states and 15172 transitions. Second operand 12 states. [2020-12-23 16:58:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:45,524 INFO L93 Difference]: Finished difference Result 26656 states and 35024 transitions. [2020-12-23 16:58:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:58:45,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-12-23 16:58:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:45,583 INFO L225 Difference]: With dead ends: 26656 [2020-12-23 16:58:45,583 INFO L226 Difference]: Without dead ends: 26638 [2020-12-23 16:58:45,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:58:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2020-12-23 16:58:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 20250. [2020-12-23 16:58:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20250 states. [2020-12-23 16:58:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20250 states to 20250 states and 26695 transitions. [2020-12-23 16:58:45,915 INFO L78 Accepts]: Start accepts. Automaton has 20250 states and 26695 transitions. Word has length 107 [2020-12-23 16:58:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:45,916 INFO L481 AbstractCegarLoop]: Abstraction has 20250 states and 26695 transitions. [2020-12-23 16:58:45,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:58:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 20250 states and 26695 transitions. [2020-12-23 16:58:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-23 16:58:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:45,935 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 8, 7, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:46,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 16:58:46,150 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1958934177, now seen corresponding path program 2 times [2020-12-23 16:58:46,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:46,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210296451] [2020-12-23 16:58:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 273 proven. 3 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-12-23 16:58:46,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210296451] [2020-12-23 16:58:46,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450234174] [2020-12-23 16:58:46,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:46,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:58:46,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:58:46,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 16:58:46,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:46,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:58:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 298 proven. 10 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-12-23 16:58:46,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:46,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2020-12-23 16:58:46,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446929483] [2020-12-23 16:58:46,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:58:46,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:46,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:58:46,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:58:46,616 INFO L87 Difference]: Start difference. First operand 20250 states and 26695 transitions. Second operand 9 states. [2020-12-23 16:58:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:46,838 INFO L93 Difference]: Finished difference Result 9867 states and 11900 transitions. [2020-12-23 16:58:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:58:46,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-12-23 16:58:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:46,851 INFO L225 Difference]: With dead ends: 9867 [2020-12-23 16:58:46,852 INFO L226 Difference]: Without dead ends: 9617 [2020-12-23 16:58:46,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:58:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9617 states. [2020-12-23 16:58:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9617 to 7469. [2020-12-23 16:58:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7469 states. [2020-12-23 16:58:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 9061 transitions. [2020-12-23 16:58:46,962 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 9061 transitions. Word has length 121 [2020-12-23 16:58:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:46,962 INFO L481 AbstractCegarLoop]: Abstraction has 7469 states and 9061 transitions. [2020-12-23 16:58:46,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:58:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 9061 transitions. [2020-12-23 16:58:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 16:58:46,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:46,973 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 12, 9, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:47,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:47,188 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1546969809, now seen corresponding path program 3 times [2020-12-23 16:58:47,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:47,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719190759] [2020-12-23 16:58:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 392 proven. 3 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-12-23 16:58:47,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719190759] [2020-12-23 16:58:47,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630667264] [2020-12-23 16:58:47,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:47,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-23 16:58:47,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:58:47,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 16:58:47,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:47,700 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:47,701 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:47,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:47,712 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:47,713 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:47,721 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:47,722 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:47,722 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:25 [2020-12-23 16:58:47,814 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:47,815 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2020-12-23 16:58:47,816 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-12-23 16:58:47,828 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:47,840 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:47,841 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2020-12-23 16:58:47,843 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2020-12-23 16:58:47,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:47,860 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:47,860 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:28 [2020-12-23 16:58:47,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:58:47,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:58:47,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:58:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 141 proven. 480 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-23 16:58:48,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:48,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 18 [2020-12-23 16:58:48,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274639705] [2020-12-23 16:58:48,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 16:58:48,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:48,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 16:58:48,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:58:48,145 INFO L87 Difference]: Start difference. First operand 7469 states and 9061 transitions. Second operand 18 states. [2020-12-23 16:58:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:54,199 INFO L93 Difference]: Finished difference Result 17153 states and 20204 transitions. [2020-12-23 16:58:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-12-23 16:58:54,199 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 139 [2020-12-23 16:58:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:54,217 INFO L225 Difference]: With dead ends: 17153 [2020-12-23 16:58:54,217 INFO L226 Difference]: Without dead ends: 17082 [2020-12-23 16:58:54,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3921 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1385, Invalid=9327, Unknown=0, NotChecked=0, Total=10712 [2020-12-23 16:58:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17082 states. [2020-12-23 16:58:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17082 to 10765. [2020-12-23 16:58:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2020-12-23 16:58:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 12899 transitions. [2020-12-23 16:58:54,394 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 12899 transitions. Word has length 139 [2020-12-23 16:58:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:54,394 INFO L481 AbstractCegarLoop]: Abstraction has 10765 states and 12899 transitions. [2020-12-23 16:58:54,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 16:58:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 12899 transitions. [2020-12-23 16:58:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 16:58:54,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:54,406 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:54,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 16:58:54,620 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:54,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:54,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2038254336, now seen corresponding path program 1 times [2020-12-23 16:58:54,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:54,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712879014] [2020-12-23 16:58:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 638 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-23 16:58:55,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712879014] [2020-12-23 16:58:55,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467236361] [2020-12-23 16:58:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:58:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:55,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 16:58:55,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:55,330 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:58:55,331 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,339 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,339 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-23 16:58:55,375 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:55,376 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,385 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,389 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:58:55,390 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,399 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,400 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2020-12-23 16:58:55,451 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,452 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 16:58:55,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:58:55,455 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,464 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,464 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2020-12-23 16:58:55,473 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-23 16:58:55,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,489 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-23 16:58:55,490 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,498 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:22 [2020-12-23 16:58:55,508 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:58:55,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,526 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:58:55,527 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,540 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,541 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-12-23 16:58:55,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:58:55,594 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 16:58:55,596 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,610 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:58:55,616 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 16:58:55,617 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,630 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:40 [2020-12-23 16:58:55,675 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2020-12-23 16:58:55,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,695 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,703 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2020-12-23 16:58:55,705 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,719 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,721 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:66, output treesize:18 [2020-12-23 16:58:55,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-23 16:58:55,774 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,785 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-23 16:58:55,786 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:55,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:55,793 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:10 [2020-12-23 16:58:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 625 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-23 16:58:55,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:55,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2020-12-23 16:58:55,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205104358] [2020-12-23 16:58:55,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 16:58:55,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:55,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 16:58:55,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:58:55,980 INFO L87 Difference]: Start difference. First operand 10765 states and 12899 transitions. Second operand 17 states. [2020-12-23 16:58:56,993 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 16:58:58,391 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-23 16:59:00,728 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-23 16:59:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:02,243 INFO L93 Difference]: Finished difference Result 38640 states and 45316 transitions. [2020-12-23 16:59:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-12-23 16:59:02,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 145 [2020-12-23 16:59:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:02,284 INFO L225 Difference]: With dead ends: 38640 [2020-12-23 16:59:02,285 INFO L226 Difference]: Without dead ends: 38502 [2020-12-23 16:59:02,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1415, Invalid=8887, Unknown=0, NotChecked=0, Total=10302 [2020-12-23 16:59:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38502 states. [2020-12-23 16:59:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38502 to 16501. [2020-12-23 16:59:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16501 states. [2020-12-23 16:59:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16501 states to 16501 states and 19769 transitions. [2020-12-23 16:59:02,784 INFO L78 Accepts]: Start accepts. Automaton has 16501 states and 19769 transitions. Word has length 145 [2020-12-23 16:59:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:02,784 INFO L481 AbstractCegarLoop]: Abstraction has 16501 states and 19769 transitions. [2020-12-23 16:59:02,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 16:59:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16501 states and 19769 transitions. [2020-12-23 16:59:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 16:59:02,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:02,811 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:03,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 16:59:03,026 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:59:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:03,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1766483300, now seen corresponding path program 2 times [2020-12-23 16:59:03,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:03,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180204893] [2020-12-23 16:59:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 638 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-23 16:59:03,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180204893] [2020-12-23 16:59:03,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210714090] [2020-12-23 16:59:03,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:59:03,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:59:03,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:59:03,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 16:59:03,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:59:03,712 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:59:03,713 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,721 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-23 16:59:03,760 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:59:03,762 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,774 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:59:03,777 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,785 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,785 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,785 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2020-12-23 16:59:03,851 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,851 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 16:59:03,853 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:59:03,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,864 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,864 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2020-12-23 16:59:03,876 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-23 16:59:03,878 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,892 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-23 16:59:03,893 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,904 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,904 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:22 [2020-12-23 16:59:03,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:59:03,916 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,932 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,939 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:59:03,941 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,955 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:03,955 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:03,956 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-12-23 16:59:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:59:04,019 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 16:59:04,021 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,038 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:04,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:59:04,051 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 16:59:04,053 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,070 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:04,072 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,072 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:40 [2020-12-23 16:59:04,164 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2020-12-23 16:59:04,168 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,183 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:04,190 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2020-12-23 16:59:04,192 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:04,208 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,209 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:66, output treesize:18 [2020-12-23 16:59:04,249 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-23 16:59:04,250 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,258 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:04,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-23 16:59:04,262 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,268 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:04,269 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:04,269 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:10 [2020-12-23 16:59:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 630 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-23 16:59:04,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:59:04,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 17 [2020-12-23 16:59:04,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422200344] [2020-12-23 16:59:04,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 16:59:04,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:04,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 16:59:04,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:59:04,421 INFO L87 Difference]: Start difference. First operand 16501 states and 19769 transitions. Second operand 18 states. [2020-12-23 16:59:05,152 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-12-23 16:59:05,692 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-12-23 16:59:05,972 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 16:59:06,839 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-23 16:59:07,791 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 16:59:09,333 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 16:59:09,559 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 16:59:11,691 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-12-23 16:59:12,842 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 16:59:13,926 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-23 16:59:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:14,542 INFO L93 Difference]: Finished difference Result 50056 states and 58534 transitions. [2020-12-23 16:59:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2020-12-23 16:59:14,543 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 145 [2020-12-23 16:59:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:14,599 INFO L225 Difference]: With dead ends: 50056 [2020-12-23 16:59:14,599 INFO L226 Difference]: Without dead ends: 49859 [2020-12-23 16:59:14,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7124 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2241, Invalid=15315, Unknown=0, NotChecked=0, Total=17556 [2020-12-23 16:59:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49859 states. [2020-12-23 16:59:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49859 to 17430. [2020-12-23 16:59:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17430 states. [2020-12-23 16:59:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17430 states to 17430 states and 20853 transitions. [2020-12-23 16:59:14,935 INFO L78 Accepts]: Start accepts. Automaton has 17430 states and 20853 transitions. Word has length 145 [2020-12-23 16:59:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:14,935 INFO L481 AbstractCegarLoop]: Abstraction has 17430 states and 20853 transitions. [2020-12-23 16:59:14,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 16:59:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 17430 states and 20853 transitions. [2020-12-23 16:59:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 16:59:14,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:14,950 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:15,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 16:59:15,166 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:59:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2022618510, now seen corresponding path program 3 times [2020-12-23 16:59:15,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:15,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227649323] [2020-12-23 16:59:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 639 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 16:59:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227649323] [2020-12-23 16:59:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815645617] [2020-12-23 16:59:15,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:59:16,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-23 16:59:16,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:59:16,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-23 16:59:16,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:59:16,338 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:59:16,339 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-23 16:59:16,387 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:59:16,388 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,401 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,406 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:59:16,407 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,420 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,422 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,422 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2020-12-23 16:59:16,570 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 16:59:16,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:59:16,574 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,582 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,583 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2020-12-23 16:59:16,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-23 16:59:16,636 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,651 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,657 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-23 16:59:16,659 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,669 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,669 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:22 [2020-12-23 16:59:16,680 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:59:16,682 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,705 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:59:16,708 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,725 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,725 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-12-23 16:59:16,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:59:16,804 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 16:59:16,806 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,824 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:59:16,833 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 16:59:16,835 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,850 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,851 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:40 [2020-12-23 16:59:16,965 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2020-12-23 16:59:16,966 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:16,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:16,985 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2020-12-23 16:59:16,990 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:17,003 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:17,006 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 16:59:17,006 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:66, output treesize:40 [2020-12-23 16:59:17,182 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:17,183 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 40 [2020-12-23 16:59:17,185 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:17,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:17,231 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:17,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 40 [2020-12-23 16:59:17,233 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:17,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:17,268 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 16:59:17,269 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 16:59:17,271 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:17,272 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:28 [2020-12-23 16:59:17,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:59:17,451 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:59:17,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:59:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 138 proven. 577 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 16:59:17,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:59:17,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2020-12-23 16:59:17,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439199034] [2020-12-23 16:59:17,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 16:59:17,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 16:59:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2020-12-23 16:59:17,587 INFO L87 Difference]: Start difference. First operand 17430 states and 20853 transitions. Second operand 25 states. [2020-12-23 16:59:18,583 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-23 16:59:19,322 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-23 16:59:19,504 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-23 16:59:19,732 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-12-23 16:59:20,037 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-23 16:59:20,238 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-23 16:59:21,473 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-23 16:59:21,694 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-12-23 16:59:21,856 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-23 16:59:22,135 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-12-23 16:59:22,348 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-23 16:59:22,602 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 16:59:23,020 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-23 16:59:23,226 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-12-23 16:59:23,682 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-23 16:59:24,456 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-23 16:59:24,895 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-12-23 16:59:25,060 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-23 16:59:25,255 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 16:59:25,460 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-23 16:59:25,838 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-23 16:59:26,342 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 16:59:26,573 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-23 16:59:26,984 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 16:59:27,187 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-23 16:59:27,514 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-23 16:59:28,193 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 16:59:28,342 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 16:59:28,627 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-23 16:59:29,564 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-23 16:59:30,334 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 16:59:30,748 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-12-23 16:59:31,156 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 16:59:31,344 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-23 16:59:31,531 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 16:59:32,421 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-12-23 16:59:32,881 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-23 16:59:33,132 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 16:59:33,530 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-23 16:59:33,841 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 16:59:34,631 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 16:59:35,280 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-23 16:59:35,436 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-23 16:59:36,183 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-23 16:59:36,408 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-12-23 16:59:36,945 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 16:59:37,122 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 16:59:37,593 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 16:59:37,960 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 16:59:38,226 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-23 16:59:38,409 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 16:59:38,554 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 16:59:38,746 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-12-23 16:59:38,926 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 16:59:39,126 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 16:59:39,276 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-23 16:59:39,489 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 16:59:39,777 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 16:59:39,965 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 16:59:40,098 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-23 16:59:40,300 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-23 16:59:40,536 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 16:59:40,716 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 16:59:41,107 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 16:59:41,616 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 16:59:41,813 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-23 16:59:42,031 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 16:59:42,195 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 16:59:42,371 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 16:59:42,546 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-23 16:59:42,707 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 16:59:42,980 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 16:59:43,418 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-23 16:59:43,583 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-23 16:59:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:43,734 INFO L93 Difference]: Finished difference Result 61945 states and 72723 transitions. [2020-12-23 16:59:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2020-12-23 16:59:43,734 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 145 [2020-12-23 16:59:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:43,801 INFO L225 Difference]: With dead ends: 61945 [2020-12-23 16:59:43,801 INFO L226 Difference]: Without dead ends: 61768 [2020-12-23 16:59:43,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16430 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=4565, Invalid=35235, Unknown=0, NotChecked=0, Total=39800 [2020-12-23 16:59:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61768 states. [2020-12-23 16:59:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61768 to 12414. [2020-12-23 16:59:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2020-12-23 16:59:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 14858 transitions. [2020-12-23 16:59:44,128 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 14858 transitions. Word has length 145 [2020-12-23 16:59:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:44,129 INFO L481 AbstractCegarLoop]: Abstraction has 12414 states and 14858 transitions. [2020-12-23 16:59:44,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 16:59:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 14858 transitions. [2020-12-23 16:59:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-23 16:59:44,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:44,139 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 15, 10, 8, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:44,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 16:59:44,355 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:59:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:44,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1004735527, now seen corresponding path program 1 times [2020-12-23 16:59:44,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:44,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699537356] [2020-12-23 16:59:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 365 proven. 3 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-12-23 16:59:44,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699537356] [2020-12-23 16:59:44,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189362137] [2020-12-23 16:59:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:59:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:44,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 16:59:44,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:59:44,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:59:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 323 proven. 106 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-23 16:59:44,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:59:44,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 16:59:44,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766503313] [2020-12-23 16:59:44,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:59:44,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:44,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:59:44,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:59:44,956 INFO L87 Difference]: Start difference. First operand 12414 states and 14858 transitions. Second operand 10 states. [2020-12-23 16:59:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:45,345 INFO L93 Difference]: Finished difference Result 11093 states and 12827 transitions. [2020-12-23 16:59:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:59:45,346 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-12-23 16:59:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:45,355 INFO L225 Difference]: With dead ends: 11093 [2020-12-23 16:59:45,356 INFO L226 Difference]: Without dead ends: 10855 [2020-12-23 16:59:45,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:59:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2020-12-23 16:59:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 8479. [2020-12-23 16:59:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8479 states. [2020-12-23 16:59:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 9828 transitions. [2020-12-23 16:59:45,431 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 9828 transitions. Word has length 150 [2020-12-23 16:59:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:45,432 INFO L481 AbstractCegarLoop]: Abstraction has 8479 states and 9828 transitions. [2020-12-23 16:59:45,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:59:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 9828 transitions. [2020-12-23 16:59:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 16:59:45,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:45,437 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 11, 9, 8, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:45,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 16:59:45,651 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:59:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1257123705, now seen corresponding path program 4 times [2020-12-23 16:59:45,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:45,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963153110] [2020-12-23 16:59:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 82 proven. 721 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 16:59:46,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963153110] [2020-12-23 16:59:46,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228410665] [2020-12-23 16:59:46,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:59:46,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:59:46,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:59:46,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 16:59:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:59:46,316 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:59:46,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,326 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:59:46,327 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,333 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,333 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-12-23 16:59:46,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:59:46,423 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-23 16:59:46,425 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,435 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,443 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,444 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 16:59:46,445 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:59:46,447 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,456 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,457 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-23 16:59:46,566 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:59:46,567 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,587 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:59:46,588 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,606 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,606 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:39 [2020-12-23 16:59:46,793 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 16:59:46,794 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,804 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,807 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:59:46,809 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:46,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:46,818 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:59:46,818 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:18 [2020-12-23 16:59:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 82 proven. 716 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-23 16:59:47,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:59:47,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2020-12-23 16:59:47,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404528148] [2020-12-23 16:59:47,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 16:59:47,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:47,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 16:59:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-12-23 16:59:47,506 INFO L87 Difference]: Start difference. First operand 8479 states and 9828 transitions. Second operand 25 states. [2020-12-23 16:59:49,817 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-23 16:59:49,967 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 16:59:50,113 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 16:59:50,660 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 16:59:51,098 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 16:59:51,282 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-23 16:59:51,883 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-23 16:59:52,623 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-12-23 16:59:53,234 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 16:59:53,380 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-23 16:59:53,560 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-23 16:59:53,872 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-23 16:59:54,154 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-12-23 16:59:54,980 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-23 16:59:55,170 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 16:59:55,532 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 16:59:56,054 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 16:59:56,229 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 16:59:56,370 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 16:59:56,517 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:59:56,718 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-23 16:59:56,910 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-23 16:59:57,073 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-12-23 16:59:57,243 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 16:59:58,057 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-12-23 16:59:58,248 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-23 16:59:58,760 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-12-23 16:59:59,108 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-12-23 16:59:59,641 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-12-23 17:00:00,103 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-23 17:00:00,282 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-12-23 17:00:00,559 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-23 17:00:00,742 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-12-23 17:00:00,939 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-12-23 17:00:01,115 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-23 17:00:01,365 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-23 17:00:01,555 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 17:00:01,716 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 17:00:01,877 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 17:00:02,241 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 17:00:02,846 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-23 17:00:03,083 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 17:00:03,398 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-23 17:00:03,707 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-12-23 17:00:03,852 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-23 17:00:04,419 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-23 17:00:04,609 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-23 17:00:04,795 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-12-23 17:00:05,007 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-12-23 17:00:05,217 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-12-23 17:00:05,383 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-12-23 17:00:05,885 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-12-23 17:00:06,107 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 17:00:06,334 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-23 17:00:06,539 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-23 17:00:06,823 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-23 17:00:07,031 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-23 17:00:07,225 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-12-23 17:00:07,406 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-23 17:00:07,955 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-23 17:00:08,132 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-12-23 17:00:08,312 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-12-23 17:00:08,475 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-23 17:00:08,739 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-23 17:00:08,897 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-12-23 17:00:09,278 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 17:00:09,554 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-23 17:00:10,077 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 17:00:10,230 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-12-23 17:00:10,499 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-23 17:00:10,650 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-12-23 17:00:11,073 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 17:00:11,306 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-23 17:00:11,639 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-12-23 17:00:12,720 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-12-23 17:00:13,771 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-23 17:00:14,154 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 17:00:14,530 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 17:00:14,820 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 17:00:15,007 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-23 17:00:15,448 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-23 17:00:15,671 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-12-23 17:00:16,284 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-23 17:00:16,995 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-12-23 17:00:17,188 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-12-23 17:00:17,527 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 17:00:17,782 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 17:00:19,010 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-12-23 17:00:19,200 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-12-23 17:00:19,387 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-12-23 17:00:20,164 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-12-23 17:00:20,450 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-12-23 17:00:20,739 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 17:00:20,951 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-12-23 17:00:21,513 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-23 17:00:21,704 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-12-23 17:00:22,122 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-23 17:00:22,298 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-23 17:00:22,879 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-12-23 17:00:23,090 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 17:00:23,291 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-23 17:00:23,661 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 17:00:23,825 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 17:00:24,002 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-12-23 17:00:24,202 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-23 17:00:24,538 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-12-23 17:00:25,084 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-23 17:00:25,251 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-23 17:00:25,619 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-12-23 17:00:25,921 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-23 17:00:26,292 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-23 17:00:26,599 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-12-23 17:00:26,811 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-12-23 17:00:27,071 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 17:00:27,866 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 17:00:28,204 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-23 17:00:28,507 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-12-23 17:00:28,821 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-12-23 17:00:29,182 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-12-23 17:00:29,547 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-12-23 17:00:29,737 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 17:00:29,923 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-12-23 17:00:30,090 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-12-23 17:00:30,300 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-23 17:00:30,717 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-12-23 17:00:31,166 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-12-23 17:00:31,362 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-12-23 17:00:31,544 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-23 17:00:31,918 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-12-23 17:00:32,104 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 17:00:32,307 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-12-23 17:00:32,703 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 17:00:32,944 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-12-23 17:00:33,162 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-12-23 17:00:33,374 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-12-23 17:00:33,768 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-12-23 17:00:33,979 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-23 17:00:34,254 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-23 17:00:34,541 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-23 17:00:34,926 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 17:00:35,448 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-12-23 17:00:35,958 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-12-23 17:00:36,186 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-12-23 17:00:36,593 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-23 17:00:36,761 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 17:00:36,945 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 17:00:37,284 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-12-23 17:00:37,515 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-12-23 17:00:37,728 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-12-23 17:00:37,950 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-12-23 17:00:38,176 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-23 17:00:38,422 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-23 17:00:38,698 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-23 17:00:39,160 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-12-23 17:00:39,384 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-12-23 17:00:39,588 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-12-23 17:00:39,966 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-12-23 17:00:40,317 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-12-23 17:00:40,570 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-12-23 17:00:40,782 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-23 17:00:41,104 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 17:00:41,530 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 17:00:42,287 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-12-23 17:00:42,501 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-23 17:00:42,962 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-12-23 17:00:43,244 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-12-23 17:00:43,551 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-12-23 17:00:43,798 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-23 17:00:44,097 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-23 17:00:44,297 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 17:00:44,480 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-12-23 17:00:44,685 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-23 17:00:44,852 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 17:00:45,347 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-12-23 17:00:45,578 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 17:00:45,774 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 17:00:46,168 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-12-23 17:00:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:00:46,312 INFO L93 Difference]: Finished difference Result 122756 states and 139602 transitions. [2020-12-23 17:00:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2020-12-23 17:00:46,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 155 [2020-12-23 17:00:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:00:46,446 INFO L225 Difference]: With dead ends: 122756 [2020-12-23 17:00:46,446 INFO L226 Difference]: Without dead ends: 122756 [2020-12-23 17:00:46,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75443 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=30138, Invalid=131868, Unknown=0, NotChecked=0, Total=162006 [2020-12-23 17:00:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122756 states. [2020-12-23 17:00:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122756 to 19759. [2020-12-23 17:00:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19759 states. [2020-12-23 17:00:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19759 states to 19759 states and 22963 transitions. [2020-12-23 17:00:47,066 INFO L78 Accepts]: Start accepts. Automaton has 19759 states and 22963 transitions. Word has length 155 [2020-12-23 17:00:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:00:47,067 INFO L481 AbstractCegarLoop]: Abstraction has 19759 states and 22963 transitions. [2020-12-23 17:00:47,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 17:00:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19759 states and 22963 transitions. [2020-12-23 17:00:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 17:00:47,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:00:47,073 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 11, 9, 8, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:00:47,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:00:47,274 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:00:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:00:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1257123706, now seen corresponding path program 1 times [2020-12-23 17:00:47,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:00:47,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113241250] [2020-12-23 17:00:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:00:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:00:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 114 proven. 681 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-12-23 17:00:47,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113241250] [2020-12-23 17:00:47,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571235731] [2020-12-23 17:00:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:00:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:00:47,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 17:00:47,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:00:47,799 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:00:47,800 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:00:47,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:47,802 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:00:47,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 17:00:47,888 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:47,888 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:00:47,890 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:00:47,908 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-23 17:00:47,909 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:00:47,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-23 17:00:48,008 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:00:48,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:00:48,018 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:48,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:00:48,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-12-23 17:00:48,167 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-12-23 17:00:48,168 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:00:48,173 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:48,174 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:00:48,174 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2020-12-23 17:00:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 236 proven. 559 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-12-23 17:00:48,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:00:48,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2020-12-23 17:00:48,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150630624] [2020-12-23 17:00:48,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 17:00:48,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:00:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 17:00:48,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-12-23 17:00:48,536 INFO L87 Difference]: Start difference. First operand 19759 states and 22963 transitions. Second operand 21 states. [2020-12-23 17:00:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:00:51,694 INFO L93 Difference]: Finished difference Result 50592 states and 58336 transitions. [2020-12-23 17:00:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-23 17:00:51,695 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2020-12-23 17:00:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:00:51,743 INFO L225 Difference]: With dead ends: 50592 [2020-12-23 17:00:51,744 INFO L226 Difference]: Without dead ends: 50592 [2020-12-23 17:00:51,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=960, Invalid=2346, Unknown=0, NotChecked=0, Total=3306 [2020-12-23 17:00:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50592 states. [2020-12-23 17:00:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50592 to 30247. [2020-12-23 17:00:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30247 states. [2020-12-23 17:00:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30247 states to 30247 states and 35260 transitions. [2020-12-23 17:00:52,196 INFO L78 Accepts]: Start accepts. Automaton has 30247 states and 35260 transitions. Word has length 155 [2020-12-23 17:00:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:00:52,196 INFO L481 AbstractCegarLoop]: Abstraction has 30247 states and 35260 transitions. [2020-12-23 17:00:52,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 17:00:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30247 states and 35260 transitions. [2020-12-23 17:00:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 17:00:52,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:00:52,203 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:00:52,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:00:52,409 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:00:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:00:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1262137880, now seen corresponding path program 2 times [2020-12-23 17:00:52,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:00:52,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174167100] [2020-12-23 17:00:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:00:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:00:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 117 proven. 592 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-12-23 17:00:52,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174167100] [2020-12-23 17:00:52,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93565023] [2020-12-23 17:00:52,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:00:52,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:00:52,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:00:52,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 17:00:52,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:00:53,118 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:00:53,119 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:00:53,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:53,125 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:00:53,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-12-23 17:00:53,229 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:53,229 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2020-12-23 17:00:53,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:00:53,232 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:00:53,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:00:53,236 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 17:00:53,236 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:9 [2020-12-23 17:00:53,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:00:53,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:00:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 102 proven. 619 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-23 17:00:53,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:00:53,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 24 [2020-12-23 17:00:53,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282236230] [2020-12-23 17:00:53,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 17:00:53,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:00:53,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 17:00:53,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-12-23 17:00:53,546 INFO L87 Difference]: Start difference. First operand 30247 states and 35260 transitions. Second operand 24 states. [2020-12-23 17:01:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:01:02,054 INFO L93 Difference]: Finished difference Result 65023 states and 74471 transitions. [2020-12-23 17:01:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-12-23 17:01:02,054 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2020-12-23 17:01:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:01:02,186 INFO L225 Difference]: With dead ends: 65023 [2020-12-23 17:01:02,186 INFO L226 Difference]: Without dead ends: 65023 [2020-12-23 17:01:02,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3051, Invalid=11469, Unknown=0, NotChecked=0, Total=14520 [2020-12-23 17:01:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65023 states. [2020-12-23 17:01:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65023 to 29973. [2020-12-23 17:01:02,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29973 states. [2020-12-23 17:01:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29973 states to 29973 states and 34917 transitions. [2020-12-23 17:01:02,570 INFO L78 Accepts]: Start accepts. Automaton has 29973 states and 34917 transitions. Word has length 157 [2020-12-23 17:01:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:01:02,571 INFO L481 AbstractCegarLoop]: Abstraction has 29973 states and 34917 transitions. [2020-12-23 17:01:02,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 17:01:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 29973 states and 34917 transitions. [2020-12-23 17:01:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 17:01:02,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:01:02,583 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:01:02,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 17:01:02,784 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:01:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:01:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1073464644, now seen corresponding path program 3 times [2020-12-23 17:01:02,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:01:02,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127146617] [2020-12-23 17:01:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:01:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:01:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 194 proven. 477 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-12-23 17:01:02,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127146617] [2020-12-23 17:01:02,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962883348] [2020-12-23 17:01:02,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:01:03,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-23 17:01:03,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:01:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 17:01:03,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:01:03,442 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:03,442 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 17:01:03,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:01:03,445 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:01:03,446 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:03,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:03,448 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:03,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-12-23 17:01:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 194 proven. 477 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-12-23 17:01:03,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:01:03,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-23 17:01:03,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025630189] [2020-12-23 17:01:03,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:01:03,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:01:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:01:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:01:03,560 INFO L87 Difference]: Start difference. First operand 29973 states and 34917 transitions. Second operand 9 states. [2020-12-23 17:01:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:01:04,085 INFO L93 Difference]: Finished difference Result 43708 states and 50447 transitions. [2020-12-23 17:01:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 17:01:04,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2020-12-23 17:01:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:01:04,122 INFO L225 Difference]: With dead ends: 43708 [2020-12-23 17:01:04,123 INFO L226 Difference]: Without dead ends: 43692 [2020-12-23 17:01:04,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:01:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43692 states. [2020-12-23 17:01:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43692 to 36708. [2020-12-23 17:01:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36708 states. [2020-12-23 17:01:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36708 states to 36708 states and 42502 transitions. [2020-12-23 17:01:04,607 INFO L78 Accepts]: Start accepts. Automaton has 36708 states and 42502 transitions. Word has length 157 [2020-12-23 17:01:04,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:01:04,608 INFO L481 AbstractCegarLoop]: Abstraction has 36708 states and 42502 transitions. [2020-12-23 17:01:04,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:01:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 36708 states and 42502 transitions. [2020-12-23 17:01:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 17:01:04,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:01:04,614 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:01:04,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:01:04,815 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:01:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:01:04,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1158952238, now seen corresponding path program 4 times [2020-12-23 17:01:04,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:01:04,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800845279] [2020-12-23 17:01:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:01:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:01:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 194 proven. 469 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-12-23 17:01:05,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800845279] [2020-12-23 17:01:05,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525115080] [2020-12-23 17:01:05,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:01:05,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 17:01:05,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:01:05,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 17:01:05,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:01:05,298 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:01:05,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:05,302 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:05,303 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:05,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 17:01:05,363 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:05,363 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 17:01:05,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:01:05,366 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:05,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:05,368 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:05,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-12-23 17:01:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 193 proven. 470 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-12-23 17:01:05,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:01:05,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-23 17:01:05,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48050465] [2020-12-23 17:01:05,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:01:05,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:01:05,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:01:05,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:01:05,539 INFO L87 Difference]: Start difference. First operand 36708 states and 42502 transitions. Second operand 7 states. [2020-12-23 17:01:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:01:06,055 INFO L93 Difference]: Finished difference Result 49849 states and 57508 transitions. [2020-12-23 17:01:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:01:06,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-12-23 17:01:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:01:06,118 INFO L225 Difference]: With dead ends: 49849 [2020-12-23 17:01:06,119 INFO L226 Difference]: Without dead ends: 49833 [2020-12-23 17:01:06,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:01:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49833 states. [2020-12-23 17:01:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49833 to 29410. [2020-12-23 17:01:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29410 states. [2020-12-23 17:01:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29410 states to 29410 states and 34166 transitions. [2020-12-23 17:01:06,593 INFO L78 Accepts]: Start accepts. Automaton has 29410 states and 34166 transitions. Word has length 157 [2020-12-23 17:01:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:01:06,593 INFO L481 AbstractCegarLoop]: Abstraction has 29410 states and 34166 transitions. [2020-12-23 17:01:06,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:01:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 29410 states and 34166 transitions. [2020-12-23 17:01:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-23 17:01:06,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:01:06,598 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:01:06,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-23 17:01:06,799 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:01:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:01:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1208665945, now seen corresponding path program 1 times [2020-12-23 17:01:06,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:01:06,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436181157] [2020-12-23 17:01:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:01:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:01:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 336 proven. 244 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-12-23 17:01:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436181157] [2020-12-23 17:01:06,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529447556] [2020-12-23 17:01:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:01:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:01:07,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 17:01:07,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:01:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 507 proven. 16 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-12-23 17:01:07,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:01:07,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2020-12-23 17:01:07,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393962040] [2020-12-23 17:01:07,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 17:01:07,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:01:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 17:01:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:01:07,392 INFO L87 Difference]: Start difference. First operand 29410 states and 34166 transitions. Second operand 11 states. [2020-12-23 17:01:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:01:08,248 INFO L93 Difference]: Finished difference Result 18986 states and 22000 transitions. [2020-12-23 17:01:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 17:01:08,249 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2020-12-23 17:01:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:01:08,267 INFO L225 Difference]: With dead ends: 18986 [2020-12-23 17:01:08,267 INFO L226 Difference]: Without dead ends: 18986 [2020-12-23 17:01:08,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=1147, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 17:01:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18986 states. [2020-12-23 17:01:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18986 to 10506. [2020-12-23 17:01:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10506 states. [2020-12-23 17:01:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10506 states to 10506 states and 12028 transitions. [2020-12-23 17:01:08,417 INFO L78 Accepts]: Start accepts. Automaton has 10506 states and 12028 transitions. Word has length 161 [2020-12-23 17:01:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:01:08,417 INFO L481 AbstractCegarLoop]: Abstraction has 10506 states and 12028 transitions. [2020-12-23 17:01:08,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 17:01:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10506 states and 12028 transitions. [2020-12-23 17:01:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-23 17:01:08,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:01:08,421 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 13, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:01:08,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:01:08,621 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:01:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:01:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1135580078, now seen corresponding path program 2 times [2020-12-23 17:01:08,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:01:08,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953321229] [2020-12-23 17:01:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:01:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:01:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 263 proven. 735 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-12-23 17:01:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953321229] [2020-12-23 17:01:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530329030] [2020-12-23 17:01:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:01:09,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:01:09,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:01:09,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 17:01:09,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:01:09,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:01:09,465 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:09,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 17:01:09,558 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:09,558 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:01:09,559 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,578 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-23 17:01:09,578 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,579 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-23 17:01:09,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:01:09,613 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,622 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:09,623 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-12-23 17:01:09,730 INFO L348 Elim1Store]: treesize reduction 12, result has 86.2 percent of original size [2020-12-23 17:01:09,731 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 89 [2020-12-23 17:01:09,733 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:01:09,734 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:01:09,736 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:09,749 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:35 [2020-12-23 17:01:09,790 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2020-12-23 17:01:09,791 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:09,804 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:35 [2020-12-23 17:01:09,814 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2020-12-23 17:01:09,815 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:09,828 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:09,830 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:01:09,831 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:44 [2020-12-23 17:01:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:01:10,029 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2020-12-23 17:01:10,031 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:10,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:10,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:01:10,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:53, output treesize:27 [2020-12-23 17:01:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 289 proven. 717 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-23 17:01:10,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:01:10,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 26 [2020-12-23 17:01:10,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487864787] [2020-12-23 17:01:10,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 17:01:10,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:01:10,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 17:01:10,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:01:10,733 INFO L87 Difference]: Start difference. First operand 10506 states and 12028 transitions. Second operand 27 states. [2020-12-23 17:01:35,378 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-23 17:01:39,769 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-12-23 17:01:40,252 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-12-23 17:01:42,412 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-12-23 17:01:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:01:42,511 INFO L93 Difference]: Finished difference Result 29321 states and 33164 transitions. [2020-12-23 17:01:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-12-23 17:01:42,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2020-12-23 17:01:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:01:42,541 INFO L225 Difference]: With dead ends: 29321 [2020-12-23 17:01:42,542 INFO L226 Difference]: Without dead ends: 29321 [2020-12-23 17:01:42,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3129, Invalid=9980, Unknown=1, NotChecked=0, Total=13110 [2020-12-23 17:01:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29321 states. [2020-12-23 17:01:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29321 to 9902. [2020-12-23 17:01:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9902 states. [2020-12-23 17:01:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9902 states to 9902 states and 11318 transitions. [2020-12-23 17:01:42,719 INFO L78 Accepts]: Start accepts. Automaton has 9902 states and 11318 transitions. Word has length 172 [2020-12-23 17:01:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:01:42,719 INFO L481 AbstractCegarLoop]: Abstraction has 9902 states and 11318 transitions. [2020-12-23 17:01:42,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 17:01:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9902 states and 11318 transitions. [2020-12-23 17:01:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-23 17:01:42,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:01:42,724 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 13, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:01:42,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-23 17:01:42,925 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:01:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:01:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1063373525, now seen corresponding path program 5 times [2020-12-23 17:01:42,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:01:42,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386761269] [2020-12-23 17:01:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:01:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:01:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 123 proven. 876 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-23 17:01:43,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386761269] [2020-12-23 17:01:43,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083856344] [2020-12-23 17:01:43,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:01:44,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-23 17:01:44,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:01:44,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-23 17:01:44,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:01:44,500 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:01:44,501 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,508 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:44,509 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,509 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:01:44,649 INFO L443 ElimStorePlain]: Different costs {0=[|v_#valid_49|], 1=[|v_#length_25|]} [2020-12-23 17:01:44,657 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:01:44,658 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:44,689 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:44,689 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:01:44,691 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,722 INFO L625 ElimStorePlain]: treesize reduction 14, result has 61.1 percent of original size [2020-12-23 17:01:44,723 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,723 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:22 [2020-12-23 17:01:44,864 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:01:44,868 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:44,885 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:01:44,886 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:44,904 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:44,904 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:45, output treesize:34 [2020-12-23 17:01:45,120 INFO L443 ElimStorePlain]: Different costs {1=[|v_#valid_50|], 3=[|v_#length_26|]} [2020-12-23 17:01:45,129 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,130 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 17:01:45,132 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:01:45,140 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,154 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,179 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,180 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 74 [2020-12-23 17:01:45,182 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,219 INFO L625 ElimStorePlain]: treesize reduction 32, result has 54.3 percent of original size [2020-12-23 17:01:45,220 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,220 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:38 [2020-12-23 17:01:45,290 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 17:01:45,291 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 17:01:45,314 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,328 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,328 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,329 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:38 [2020-12-23 17:01:45,342 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 17:01:45,343 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,368 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-23 17:01:45,369 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,391 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:01:45,391 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:64, output treesize:56 [2020-12-23 17:01:45,625 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 12 [2020-12-23 17:01:45,627 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-12-23 17:01:45,651 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:01:45,662 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:01:45,664 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:01:45,664 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:23 [2020-12-23 17:01:46,457 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-23 17:01:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 133 proven. 900 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-23 17:01:46,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:01:46,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2020-12-23 17:01:46,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394463164] [2020-12-23 17:01:46,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 17:01:46,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:01:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 17:01:46,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2020-12-23 17:01:46,899 INFO L87 Difference]: Start difference. First operand 9902 states and 11318 transitions. Second operand 32 states. [2020-12-23 17:01:49,102 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 17:01:49,460 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-12-23 17:01:50,366 WARN L197 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-23 17:01:51,293 WARN L197 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 17:01:51,687 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-12-23 17:01:52,070 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 17:01:52,425 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 17:01:53,057 WARN L197 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-12-23 17:01:53,352 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 17:01:54,019 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 17:01:54,926 WARN L197 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-23 17:01:55,331 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 17:01:55,983 WARN L197 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-23 17:01:56,767 WARN L197 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-12-23 17:01:57,179 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 17:01:57,334 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 17:01:57,985 WARN L197 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 17:01:58,291 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-23 17:01:58,436 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 17:01:58,689 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 17:01:58,831 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 17:01:59,532 WARN L197 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 17:02:00,718 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-23 17:02:01,225 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-23 17:02:01,602 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-23 17:02:01,825 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 17:02:02,449 WARN L197 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-23 17:02:02,884 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-23 17:02:03,063 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-23 17:02:03,227 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-23 17:02:03,590 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-23 17:02:04,171 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-23 17:02:04,611 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-23 17:02:04,839 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-12-23 17:02:05,508 WARN L197 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 17:02:05,869 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-23 17:02:06,296 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-12-23 17:02:07,578 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 17:02:07,764 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-23 17:02:07,939 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 17:02:08,687 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-23 17:02:08,891 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 17:02:09,331 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 17:02:09,495 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 17:02:09,722 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-12-23 17:02:09,913 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 17:02:10,675 WARN L197 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-12-23 17:02:11,557 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-23 17:02:12,732 WARN L197 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 17:02:13,548 WARN L197 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-23 17:02:13,706 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-23 17:02:14,443 WARN L197 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 17:02:14,632 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 17:02:14,851 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72