/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-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 12:49:35,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 12:49:35,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 12:49:35,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 12:49:35,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 12:49:35,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 12:49:35,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 12:49:35,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 12:49:35,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 12:49:35,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 12:49:35,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 12:49:35,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 12:49:35,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 12:49:35,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 12:49:35,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 12:49:35,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 12:49:35,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 12:49:35,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 12:49:35,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 12:49:35,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 12:49:35,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 12:49:35,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 12:49:35,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 12:49:35,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 12:49:35,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 12:49:35,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 12:49:35,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 12:49:35,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 12:49:35,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 12:49:35,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 12:49:35,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 12:49:35,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 12:49:35,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 12:49:35,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 12:49:35,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 12:49:35,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 12:49:35,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 12:49:35,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 12:49:35,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 12:49:35,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 12:49:35,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 12:49:35,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 12:49:35,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 12:49:35,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 12:49:35,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 12:49:35,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 12:49:35,307 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 12:49:35,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 12:49:35,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 12:49:35,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 12:49:35,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 12:49:35,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 12:49:35,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 12:49:35,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 12:49:35,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 12:49:35,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 12:49:35,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 12:49:35,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 12:49:35,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 12:49:35,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:49:35,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 12:49:35,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 12:49:35,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 12:49:35,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 12:49:35,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 12:49:35,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 12:49:35,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 12:49:35,313 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 12:49:35,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 12:49:35,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 12:49:35,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 12:49:35,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 12:49:35,844 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 12:49:35,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2020-12-22 12:49:35,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/814c5cd6b/65f240776a6e4255acccec41aa288de1/FLAGe4f683855 [2020-12-22 12:49:37,110 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 12:49:37,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2020-12-22 12:49:37,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/814c5cd6b/65f240776a6e4255acccec41aa288de1/FLAGe4f683855 [2020-12-22 12:49:37,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/814c5cd6b/65f240776a6e4255acccec41aa288de1 [2020-12-22 12:49:37,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 12:49:37,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 12:49:37,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 12:49:37,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 12:49:37,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 12:49:37,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:49:37" (1/1) ... [2020-12-22 12:49:37,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc5b7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:37, skipping insertion in model container [2020-12-22 12:49:37,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:49:37" (1/1) ... [2020-12-22 12:49:37,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 12:49:37,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 12:49:39,122 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2020-12-22 12:49:39,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:49:39,293 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 12:49:39,664 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2020-12-22 12:49:39,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:49:40,087 INFO L208 MainTranslator]: Completed translation [2020-12-22 12:49:40,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40 WrapperNode [2020-12-22 12:49:40,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 12:49:40,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 12:49:40,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 12:49:40,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 12:49:40,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:40,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:44,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 12:49:44,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 12:49:44,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 12:49:44,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 12:49:44,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:44,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:44,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:44,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:46,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:46,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:47,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... [2020-12-22 12:49:47,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 12:49:47,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 12:49:47,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 12:49:47,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 12:49:47,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:49:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 12:49:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 12:49:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 12:49:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 12:49:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 12:49:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 12:49:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 12:49:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 12:49:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 12:49:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 12:49:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 12:49:47,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 12:51:13,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 12:51:13,946 INFO L299 CfgBuilder]: Removed 14430 assume(true) statements. [2020-12-22 12:51:13,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:51:13 BoogieIcfgContainer [2020-12-22 12:51:13,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 12:51:13,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 12:51:13,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 12:51:13,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 12:51:13,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:49:37" (1/3) ... [2020-12-22 12:51:13,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d5c213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:51:13, skipping insertion in model container [2020-12-22 12:51:13,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:40" (2/3) ... [2020-12-22 12:51:13,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d5c213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:51:13, skipping insertion in model container [2020-12-22 12:51:13,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:51:13" (3/3) ... [2020-12-22 12:51:13,970 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2020-12-22 12:51:13,977 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 12:51:13,987 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-12-22 12:51:14,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-12-22 12:51:14,091 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 12:51:14,092 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 12:51:14,092 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 12:51:14,092 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 12:51:14,092 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 12:51:14,092 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 12:51:14,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 12:51:14,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 12:51:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 12100 states. [2020-12-22 12:51:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 12:51:14,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:14,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:14,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:14,262 INFO L82 PathProgramCache]: Analyzing trace with hash 14419201, now seen corresponding path program 1 times [2020-12-22 12:51:14,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:14,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896796979] [2020-12-22 12:51:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:14,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896796979] [2020-12-22 12:51:14,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:14,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:14,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909647698] [2020-12-22 12:51:14,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:14,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:14,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:14,906 INFO L87 Difference]: Start difference. First operand 12100 states. Second operand 3 states. [2020-12-22 12:51:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:16,115 INFO L93 Difference]: Finished difference Result 33157 states and 42405 transitions. [2020-12-22 12:51:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:16,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 12:51:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:16,267 INFO L225 Difference]: With dead ends: 33157 [2020-12-22 12:51:16,268 INFO L226 Difference]: Without dead ends: 21052 [2020-12-22 12:51:16,315 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 [2020-12-22 12:51:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2020-12-22 12:51:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 21030. [2020-12-22 12:51:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21030 states. [2020-12-22 12:51:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21030 states to 21030 states and 26691 transitions. [2020-12-22 12:51:17,413 INFO L78 Accepts]: Start accepts. Automaton has 21030 states and 26691 transitions. Word has length 13 [2020-12-22 12:51:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:17,414 INFO L481 AbstractCegarLoop]: Abstraction has 21030 states and 26691 transitions. [2020-12-22 12:51:17,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 21030 states and 26691 transitions. [2020-12-22 12:51:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 12:51:17,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:17,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:17,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 12:51:17,418 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:17,420 INFO L82 PathProgramCache]: Analyzing trace with hash -63068992, now seen corresponding path program 1 times [2020-12-22 12:51:17,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:17,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104425903] [2020-12-22 12:51:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:17,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104425903] [2020-12-22 12:51:17,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:17,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:17,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776598011] [2020-12-22 12:51:17,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:17,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:17,617 INFO L87 Difference]: Start difference. First operand 21030 states and 26691 transitions. Second operand 3 states. [2020-12-22 12:51:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:19,948 INFO L93 Difference]: Finished difference Result 44609 states and 56620 transitions. [2020-12-22 12:51:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:19,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 12:51:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:20,050 INFO L225 Difference]: With dead ends: 44609 [2020-12-22 12:51:20,051 INFO L226 Difference]: Without dead ends: 23582 [2020-12-22 12:51:20,090 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 [2020-12-22 12:51:20,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23582 states. [2020-12-22 12:51:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23582 to 23564. [2020-12-22 12:51:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23564 states. [2020-12-22 12:51:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23564 states to 23564 states and 29917 transitions. [2020-12-22 12:51:20,984 INFO L78 Accepts]: Start accepts. Automaton has 23564 states and 29917 transitions. Word has length 15 [2020-12-22 12:51:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:20,986 INFO L481 AbstractCegarLoop]: Abstraction has 23564 states and 29917 transitions. [2020-12-22 12:51:20,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 23564 states and 29917 transitions. [2020-12-22 12:51:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 12:51:20,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:20,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:20,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 12:51:20,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:20,994 INFO L82 PathProgramCache]: Analyzing trace with hash -523222962, now seen corresponding path program 1 times [2020-12-22 12:51:20,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:20,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330762778] [2020-12-22 12:51:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:21,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330762778] [2020-12-22 12:51:21,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:21,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 12:51:21,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74019391] [2020-12-22 12:51:21,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:21,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:21,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:21,183 INFO L87 Difference]: Start difference. First operand 23564 states and 29917 transitions. Second operand 3 states. [2020-12-22 12:51:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:22,158 INFO L93 Difference]: Finished difference Result 47125 states and 59831 transitions. [2020-12-22 12:51:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:22,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-22 12:51:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:22,218 INFO L225 Difference]: With dead ends: 47125 [2020-12-22 12:51:22,224 INFO L226 Difference]: Without dead ends: 23564 [2020-12-22 12:51:22,264 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 [2020-12-22 12:51:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23564 states. [2020-12-22 12:51:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23564 to 23564. [2020-12-22 12:51:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23564 states. [2020-12-22 12:51:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23564 states to 23564 states and 29915 transitions. [2020-12-22 12:51:23,372 INFO L78 Accepts]: Start accepts. Automaton has 23564 states and 29915 transitions. Word has length 16 [2020-12-22 12:51:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:23,373 INFO L481 AbstractCegarLoop]: Abstraction has 23564 states and 29915 transitions. [2020-12-22 12:51:23,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 23564 states and 29915 transitions. [2020-12-22 12:51:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:51:23,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:23,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:23,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 12:51:23,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:23,382 INFO L82 PathProgramCache]: Analyzing trace with hash 842125499, now seen corresponding path program 1 times [2020-12-22 12:51:23,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:23,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599021855] [2020-12-22 12:51:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:23,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599021855] [2020-12-22 12:51:23,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:23,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:23,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286469933] [2020-12-22 12:51:23,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:23,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:23,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:23,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:23,527 INFO L87 Difference]: Start difference. First operand 23564 states and 29915 transitions. Second operand 3 states. [2020-12-22 12:51:24,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:24,737 INFO L93 Difference]: Finished difference Result 47141 states and 59851 transitions. [2020-12-22 12:51:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:24,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 12:51:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:24,802 INFO L225 Difference]: With dead ends: 47141 [2020-12-22 12:51:24,802 INFO L226 Difference]: Without dead ends: 23580 [2020-12-22 12:51:24,848 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 [2020-12-22 12:51:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23580 states. [2020-12-22 12:51:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23580 to 23566. [2020-12-22 12:51:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23566 states. [2020-12-22 12:51:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23566 states to 23566 states and 29917 transitions. [2020-12-22 12:51:25,894 INFO L78 Accepts]: Start accepts. Automaton has 23566 states and 29917 transitions. Word has length 23 [2020-12-22 12:51:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:25,895 INFO L481 AbstractCegarLoop]: Abstraction has 23566 states and 29917 transitions. [2020-12-22 12:51:25,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 23566 states and 29917 transitions. [2020-12-22 12:51:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 12:51:25,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:25,896 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:25,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 12:51:25,897 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash 17501300, now seen corresponding path program 1 times [2020-12-22 12:51:25,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:25,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054521000] [2020-12-22 12:51:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:26,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054521000] [2020-12-22 12:51:26,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944263056] [2020-12-22 12:51:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:26,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 12:51:26,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:26,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:26,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:26,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733280502] [2020-12-22 12:51:26,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:26,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:26,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:26,955 INFO L87 Difference]: Start difference. First operand 23566 states and 29917 transitions. Second operand 3 states. [2020-12-22 12:51:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:28,497 INFO L93 Difference]: Finished difference Result 56325 states and 71499 transitions. [2020-12-22 12:51:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:28,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 12:51:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:28,567 INFO L225 Difference]: With dead ends: 56325 [2020-12-22 12:51:28,567 INFO L226 Difference]: Without dead ends: 32762 [2020-12-22 12:51:28,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32762 states. [2020-12-22 12:51:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32762 to 23570. [2020-12-22 12:51:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23570 states. [2020-12-22 12:51:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23570 states to 23570 states and 29921 transitions. [2020-12-22 12:51:29,739 INFO L78 Accepts]: Start accepts. Automaton has 23570 states and 29921 transitions. Word has length 27 [2020-12-22 12:51:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:29,740 INFO L481 AbstractCegarLoop]: Abstraction has 23570 states and 29921 transitions. [2020-12-22 12:51:29,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23570 states and 29921 transitions. [2020-12-22 12:51:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 12:51:29,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:29,742 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:29,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:29,956 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:29,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1355879094, now seen corresponding path program 1 times [2020-12-22 12:51:29,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:29,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033630050] [2020-12-22 12:51:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:30,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033630050] [2020-12-22 12:51:30,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839864183] [2020-12-22 12:51:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:31,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:31,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:31,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:31,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:31,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227179682] [2020-12-22 12:51:31,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:31,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:31,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:31,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:31,338 INFO L87 Difference]: Start difference. First operand 23570 states and 29921 transitions. Second operand 3 states. [2020-12-22 12:51:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:32,812 INFO L93 Difference]: Finished difference Result 61510 states and 78093 transitions. [2020-12-22 12:51:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:32,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 12:51:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:32,878 INFO L225 Difference]: With dead ends: 61510 [2020-12-22 12:51:32,878 INFO L226 Difference]: Without dead ends: 37943 [2020-12-22 12:51:32,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37943 states. [2020-12-22 12:51:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37943 to 32762. [2020-12-22 12:51:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32762 states. [2020-12-22 12:51:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32762 states to 32762 states and 41583 transitions. [2020-12-22 12:51:34,458 INFO L78 Accepts]: Start accepts. Automaton has 32762 states and 41583 transitions. Word has length 28 [2020-12-22 12:51:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:34,458 INFO L481 AbstractCegarLoop]: Abstraction has 32762 states and 41583 transitions. [2020-12-22 12:51:34,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 32762 states and 41583 transitions. [2020-12-22 12:51:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 12:51:34,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:34,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:34,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:34,674 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:34,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash -169760719, now seen corresponding path program 1 times [2020-12-22 12:51:34,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:34,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4728664] [2020-12-22 12:51:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:35,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4728664] [2020-12-22 12:51:35,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217443681] [2020-12-22 12:51:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:35,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:35,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:51:36,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:36,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:36,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424900822] [2020-12-22 12:51:36,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:36,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:36,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:36,023 INFO L87 Difference]: Start difference. First operand 32762 states and 41583 transitions. Second operand 3 states. [2020-12-22 12:51:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:36,944 INFO L93 Difference]: Finished difference Result 32786 states and 41605 transitions. [2020-12-22 12:51:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:36,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 12:51:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:36,990 INFO L225 Difference]: With dead ends: 32786 [2020-12-22 12:51:36,990 INFO L226 Difference]: Without dead ends: 32774 [2020-12-22 12:51:37,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32774 states. [2020-12-22 12:51:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32774 to 32762. [2020-12-22 12:51:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32762 states. [2020-12-22 12:51:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32762 states to 32762 states and 41582 transitions. [2020-12-22 12:51:38,593 INFO L78 Accepts]: Start accepts. Automaton has 32762 states and 41582 transitions. Word has length 33 [2020-12-22 12:51:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:38,593 INFO L481 AbstractCegarLoop]: Abstraction has 32762 states and 41582 transitions. [2020-12-22 12:51:38,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 32762 states and 41582 transitions. [2020-12-22 12:51:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 12:51:38,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:38,595 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:38,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:38,804 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:38,805 INFO L82 PathProgramCache]: Analyzing trace with hash -169701137, now seen corresponding path program 1 times [2020-12-22 12:51:38,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:38,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399807530] [2020-12-22 12:51:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399807530] [2020-12-22 12:51:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854385237] [2020-12-22 12:51:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:39,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:39,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:51:39,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:39,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:39,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397336082] [2020-12-22 12:51:39,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:39,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:39,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:39,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:39,886 INFO L87 Difference]: Start difference. First operand 32762 states and 41582 transitions. Second operand 3 states. [2020-12-22 12:51:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:41,539 INFO L93 Difference]: Finished difference Result 32762 states and 41582 transitions. [2020-12-22 12:51:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:41,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 12:51:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:41,580 INFO L225 Difference]: With dead ends: 32762 [2020-12-22 12:51:41,580 INFO L226 Difference]: Without dead ends: 32760 [2020-12-22 12:51:41,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32760 states. [2020-12-22 12:51:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32760 to 32760. [2020-12-22 12:51:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32760 states. [2020-12-22 12:51:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32760 states to 32760 states and 41580 transitions. [2020-12-22 12:51:42,943 INFO L78 Accepts]: Start accepts. Automaton has 32760 states and 41580 transitions. Word has length 33 [2020-12-22 12:51:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:42,944 INFO L481 AbstractCegarLoop]: Abstraction has 32760 states and 41580 transitions. [2020-12-22 12:51:42,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 32760 states and 41580 transitions. [2020-12-22 12:51:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 12:51:42,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:42,945 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:43,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:43,156 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash -965733363, now seen corresponding path program 1 times [2020-12-22 12:51:43,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:43,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898934573] [2020-12-22 12:51:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898934573] [2020-12-22 12:51:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902618055] [2020-12-22 12:51:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:43,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:43,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:51:43,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:43,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:43,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908735563] [2020-12-22 12:51:43,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:43,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:43,971 INFO L87 Difference]: Start difference. First operand 32760 states and 41580 transitions. Second operand 3 states. [2020-12-22 12:51:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:46,576 INFO L93 Difference]: Finished difference Result 32760 states and 41580 transitions. [2020-12-22 12:51:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:46,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 12:51:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:46,620 INFO L225 Difference]: With dead ends: 32760 [2020-12-22 12:51:46,621 INFO L226 Difference]: Without dead ends: 32758 [2020-12-22 12:51:46,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32758 states. [2020-12-22 12:51:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32758 to 32758. [2020-12-22 12:51:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32758 states. [2020-12-22 12:51:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32758 states to 32758 states and 41578 transitions. [2020-12-22 12:51:48,029 INFO L78 Accepts]: Start accepts. Automaton has 32758 states and 41578 transitions. Word has length 34 [2020-12-22 12:51:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:48,029 INFO L481 AbstractCegarLoop]: Abstraction has 32758 states and 41578 transitions. [2020-12-22 12:51:48,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 32758 states and 41578 transitions. [2020-12-22 12:51:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 12:51:48,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:48,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:48,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:48,237 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash 127071417, now seen corresponding path program 1 times [2020-12-22 12:51:48,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:48,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957057900] [2020-12-22 12:51:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:48,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957057900] [2020-12-22 12:51:48,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536830560] [2020-12-22 12:51:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:49,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:49,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:51:49,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:49,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:49,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892898633] [2020-12-22 12:51:49,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:49,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:49,147 INFO L87 Difference]: Start difference. First operand 32758 states and 41578 transitions. Second operand 3 states. [2020-12-22 12:51:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:52,280 INFO L93 Difference]: Finished difference Result 32758 states and 41578 transitions. [2020-12-22 12:51:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:52,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 12:51:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:52,326 INFO L225 Difference]: With dead ends: 32758 [2020-12-22 12:51:52,326 INFO L226 Difference]: Without dead ends: 32756 [2020-12-22 12:51:52,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32756 states. [2020-12-22 12:51:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32756 to 32756. [2020-12-22 12:51:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32756 states. [2020-12-22 12:51:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32756 states to 32756 states and 41576 transitions. [2020-12-22 12:51:53,826 INFO L78 Accepts]: Start accepts. Automaton has 32756 states and 41576 transitions. Word has length 35 [2020-12-22 12:51:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:53,826 INFO L481 AbstractCegarLoop]: Abstraction has 32756 states and 41576 transitions. [2020-12-22 12:51:53,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 32756 states and 41576 transitions. [2020-12-22 12:51:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 12:51:53,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:53,828 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 12:51:54,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:54,041 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:54,042 INFO L82 PathProgramCache]: Analyzing trace with hash -355718761, now seen corresponding path program 1 times [2020-12-22 12:51:54,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:54,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164702821] [2020-12-22 12:51:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:54,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164702821] [2020-12-22 12:51:54,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857427538] [2020-12-22 12:51:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:54,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:54,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:51:55,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:55,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:55,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336758048] [2020-12-22 12:51:55,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:55,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:55,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:55,018 INFO L87 Difference]: Start difference. First operand 32756 states and 41576 transitions. Second operand 3 states. [2020-12-22 12:51:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:57,758 INFO L93 Difference]: Finished difference Result 32756 states and 41576 transitions. [2020-12-22 12:51:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:57,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 12:51:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:57,794 INFO L225 Difference]: With dead ends: 32756 [2020-12-22 12:51:57,795 INFO L226 Difference]: Without dead ends: 32732 [2020-12-22 12:51:57,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32732 states. [2020-12-22 12:51:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32732 to 32732. [2020-12-22 12:51:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32732 states. [2020-12-22 12:51:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32732 states to 32732 states and 41543 transitions. [2020-12-22 12:51:59,130 INFO L78 Accepts]: Start accepts. Automaton has 32732 states and 41543 transitions. Word has length 36 [2020-12-22 12:51:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:59,131 INFO L481 AbstractCegarLoop]: Abstraction has 32732 states and 41543 transitions. [2020-12-22 12:51:59,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 32732 states and 41543 transitions. [2020-12-22 12:51:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 12:51:59,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:59,132 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:59,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:59,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash 875062828, now seen corresponding path program 1 times [2020-12-22 12:51:59,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:59,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035438039] [2020-12-22 12:51:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:59,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035438039] [2020-12-22 12:51:59,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033273911] [2020-12-22 12:51:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:52:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:00,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 12:52:00,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:52:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:52:00,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:52:00,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:52:00,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538725984] [2020-12-22 12:52:00,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:00,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:00,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:00,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:52:00,235 INFO L87 Difference]: Start difference. First operand 32732 states and 41543 transitions. Second operand 3 states. [2020-12-22 12:52:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:02,443 INFO L93 Difference]: Finished difference Result 79343 states and 100728 transitions. [2020-12-22 12:52:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:02,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-22 12:52:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:02,499 INFO L225 Difference]: With dead ends: 79343 [2020-12-22 12:52:02,499 INFO L226 Difference]: Without dead ends: 46614 [2020-12-22 12:52:02,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:52:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46614 states. [2020-12-22 12:52:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46614 to 46614. [2020-12-22 12:52:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46614 states. [2020-12-22 12:52:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46614 states to 46614 states and 59180 transitions. [2020-12-22 12:52:04,731 INFO L78 Accepts]: Start accepts. Automaton has 46614 states and 59180 transitions. Word has length 46 [2020-12-22 12:52:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:04,732 INFO L481 AbstractCegarLoop]: Abstraction has 46614 states and 59180 transitions. [2020-12-22 12:52:04,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 46614 states and 59180 transitions. [2020-12-22 12:52:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 12:52:04,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:04,738 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 12:52:04,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 12:52:04,952 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1841768488, now seen corresponding path program 1 times [2020-12-22 12:52:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:04,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381905745] [2020-12-22 12:52:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:52:05,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381905745] [2020-12-22 12:52:05,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188817342] [2020-12-22 12:52:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:52:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:05,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:52:05,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:52:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 12:52:05,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:52:05,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:52:05,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703801532] [2020-12-22 12:52:05,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:05,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:05,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:05,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:52:05,821 INFO L87 Difference]: Start difference. First operand 46614 states and 59180 transitions. Second operand 3 states. [2020-12-22 12:53:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:53:01,036 INFO L93 Difference]: Finished difference Result 97012 states and 123600 transitions. [2020-12-22 12:53:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:53:01,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 12:53:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:53:01,111 INFO L225 Difference]: With dead ends: 97012 [2020-12-22 12:53:01,111 INFO L226 Difference]: Without dead ends: 50401 [2020-12-22 12:53:01,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:53:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50401 states. [2020-12-22 12:53:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50401 to 46816. [2020-12-22 12:53:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46816 states. [2020-12-22 12:53:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46816 states to 46816 states and 59382 transitions. [2020-12-22 12:53:03,728 INFO L78 Accepts]: Start accepts. Automaton has 46816 states and 59382 transitions. Word has length 67 [2020-12-22 12:53:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:53:03,728 INFO L481 AbstractCegarLoop]: Abstraction has 46816 states and 59382 transitions. [2020-12-22 12:53:03,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:53:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 46816 states and 59382 transitions. [2020-12-22 12:53:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 12:53:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:53:03,738 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1] [2020-12-22 12:53:03,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:53:03,953 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:53:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:53:03,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1954354568, now seen corresponding path program 1 times [2020-12-22 12:53:03,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:53:03,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867685282] [2020-12-22 12:53:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:53:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:53:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:53:04,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867685282] [2020-12-22 12:53:04,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933577956] [2020-12-22 12:53:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:53:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:53:04,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:53:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:53:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 12:53:04,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:53:04,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:53:04,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202735923] [2020-12-22 12:53:04,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:53:04,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:53:04,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:53:04,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:53:04,890 INFO L87 Difference]: Start difference. First operand 46816 states and 59382 transitions. Second operand 3 states. [2020-12-22 12:53:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:53:08,577 INFO L93 Difference]: Finished difference Result 46816 states and 59382 transitions. [2020-12-22 12:53:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:53:08,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 12:53:08,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:53:08,579 INFO L225 Difference]: With dead ends: 46816 [2020-12-22 12:53:08,579 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 12:53:08,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:53:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 12:53:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 12:53:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 12:53:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 12:53:08,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-12-22 12:53:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:53:08,631 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 12:53:08,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:53:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 12:53:08,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 12:53:08,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:53:08,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 12:53:11,452 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 18 [2020-12-22 12:53:13,396 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26