/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--pt.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 12:49:47,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 12:49:47,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 12:49:47,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 12:49:47,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 12:49:47,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 12:49:47,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 12:49:47,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 12:49:47,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 12:49:47,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 12:49:47,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 12:49:47,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 12:49:47,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 12:49:47,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 12:49:47,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 12:49:47,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 12:49:47,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 12:49:47,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 12:49:47,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 12:49:47,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 12:49:47,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 12:49:47,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 12:49:47,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 12:49:47,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 12:49:47,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 12:49:47,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 12:49:47,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 12:49:47,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 12:49:47,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 12:49:47,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 12:49:47,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 12:49:47,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 12:49:47,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 12:49:47,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 12:49:47,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 12:49:47,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 12:49:47,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 12:49:47,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 12:49:47,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 12:49:47,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 12:49:47,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 12:49:47,655 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 12:49:47,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 12:49:47,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 12:49:47,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 12:49:47,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 12:49:47,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 12:49:47,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 12:49:47,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 12:49:47,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 12:49:47,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 12:49:47,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 12:49:47,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 12:49:47,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 12:49:47,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:49:47,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 12:49:47,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 12:49:47,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 12:49:47,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 12:49:47,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 12:49:47,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 12:49:47,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 12:49:47,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 12:49:48,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 12:49:48,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 12:49:48,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 12:49:48,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 12:49:48,152 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 12:49:48,153 INFO L432 ainManager$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--pt.ko-main.cil.out.i [2020-12-22 12:49:48,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548435dde/78a8b2419e234941b51b01f3056f3f74/FLAG5b9633fcb [2020-12-22 12:49:49,251 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 12:49:49,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2020-12-22 12:49:49,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548435dde/78a8b2419e234941b51b01f3056f3f74/FLAG5b9633fcb [2020-12-22 12:49:49,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548435dde/78a8b2419e234941b51b01f3056f3f74 [2020-12-22 12:49:49,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 12:49:49,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 12:49:49,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 12:49:49,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 12:49:49,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 12:49:49,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:49:49" (1/1) ... [2020-12-22 12:49:49,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399984a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:49, skipping insertion in model container [2020-12-22 12:49:49,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:49:49" (1/1) ... [2020-12-22 12:49:49,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 12:49:49,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 12:49:50,979 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--pt.ko-main.cil.out.i[119285,119298] [2020-12-22 12:49:51,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:49:51,132 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 12:49:51,431 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--pt.ko-main.cil.out.i[119285,119298] [2020-12-22 12:49:51,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:49:51,597 INFO L208 MainTranslator]: Completed translation [2020-12-22 12:49:51,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51 WrapperNode [2020-12-22 12:49:51,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 12:49:51,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 12:49:51,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 12:49:51,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 12:49:51,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:51,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:54,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 12:49:54,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 12:49:54,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 12:49:54,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 12:49:54,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:54,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:54,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:54,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:55,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:55,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:55,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (1/1) ... [2020-12-22 12:49:55,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 12:49:55,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 12:49:55,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 12:49:55,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 12:49:55,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (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 12:49:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 12:49:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 12:49:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 12:49:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 12:49:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 12:49:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 12:49:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 12:49:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 12:49:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 12:49:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 12:49:55,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 12:51:00,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 12:51:00,703 INFO L299 CfgBuilder]: Removed 10130 assume(true) statements. [2020-12-22 12:51:00,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:51:00 BoogieIcfgContainer [2020-12-22 12:51:00,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 12:51:00,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 12:51:00,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 12:51:00,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 12:51:00,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:49:49" (1/3) ... [2020-12-22 12:51:00,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768c43d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:51:00, skipping insertion in model container [2020-12-22 12:51:00,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:49:51" (2/3) ... [2020-12-22 12:51:00,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768c43d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:51:00, skipping insertion in model container [2020-12-22 12:51:00,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:51:00" (3/3) ... [2020-12-22 12:51:00,724 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2020-12-22 12:51:00,731 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 12:51:00,740 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-22 12:51:00,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-22 12:51:00,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 12:51:00,823 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 12:51:00,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 12:51:00,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 12:51:00,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 12:51:00,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 12:51:00,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 12:51:00,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 12:51:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states. [2020-12-22 12:51:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 12:51:00,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:00,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:00,954 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:00,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:00,962 INFO L82 PathProgramCache]: Analyzing trace with hash 296755471, now seen corresponding path program 1 times [2020-12-22 12:51:00,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:00,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700265726] [2020-12-22 12:51:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:01,689 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 12:51:01,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700265726] [2020-12-22 12:51:01,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:01,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:01,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092681767] [2020-12-22 12:51:01,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:01,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:01,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:01,718 INFO L87 Difference]: Start difference. First operand 8118 states. Second operand 3 states. [2020-12-22 12:51:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:03,790 INFO L93 Difference]: Finished difference Result 19784 states and 25697 transitions. [2020-12-22 12:51:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:03,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-22 12:51:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:03,888 INFO L225 Difference]: With dead ends: 19784 [2020-12-22 12:51:03,889 INFO L226 Difference]: Without dead ends: 11661 [2020-12-22 12:51:03,914 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 12:51:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11661 states. [2020-12-22 12:51:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11661 to 11639. [2020-12-22 12:51:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2020-12-22 12:51:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 15008 transitions. [2020-12-22 12:51:04,482 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 15008 transitions. Word has length 12 [2020-12-22 12:51:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:04,484 INFO L481 AbstractCegarLoop]: Abstraction has 11639 states and 15008 transitions. [2020-12-22 12:51:04,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 15008 transitions. [2020-12-22 12:51:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 12:51:04,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:04,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:04,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 12:51:04,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash -299393486, now seen corresponding path program 1 times [2020-12-22 12:51:04,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:04,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579175819] [2020-12-22 12:51:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:04,755 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 12:51:04,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579175819] [2020-12-22 12:51:04,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:04,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 12:51:04,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469050769] [2020-12-22 12:51:04,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:04,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:04,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:04,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:04,764 INFO L87 Difference]: Start difference. First operand 11639 states and 15008 transitions. Second operand 3 states. [2020-12-22 12:51:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:05,228 INFO L93 Difference]: Finished difference Result 23275 states and 30013 transitions. [2020-12-22 12:51:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:05,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 12:51:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:05,296 INFO L225 Difference]: With dead ends: 23275 [2020-12-22 12:51:05,296 INFO L226 Difference]: Without dead ends: 11639 [2020-12-22 12:51:05,321 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 12:51:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11639 states. [2020-12-22 12:51:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11639 to 11639. [2020-12-22 12:51:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2020-12-22 12:51:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 15006 transitions. [2020-12-22 12:51:06,235 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 15006 transitions. Word has length 17 [2020-12-22 12:51:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:06,236 INFO L481 AbstractCegarLoop]: Abstraction has 11639 states and 15006 transitions. [2020-12-22 12:51:06,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 15006 transitions. [2020-12-22 12:51:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 12:51:06,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:06,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:06,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 12:51:06,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:06,239 INFO L82 PathProgramCache]: Analyzing trace with hash -568284282, now seen corresponding path program 1 times [2020-12-22 12:51:06,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:06,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568295985] [2020-12-22 12:51:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:06,409 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 12:51:06,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568295985] [2020-12-22 12:51:06,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:06,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:06,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466955824] [2020-12-22 12:51:06,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:06,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:06,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:06,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:06,417 INFO L87 Difference]: Start difference. First operand 11639 states and 15006 transitions. Second operand 3 states. [2020-12-22 12:51:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:08,671 INFO L93 Difference]: Finished difference Result 27441 states and 35376 transitions. [2020-12-22 12:51:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:08,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 12:51:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:08,754 INFO L225 Difference]: With dead ends: 27441 [2020-12-22 12:51:08,755 INFO L226 Difference]: Without dead ends: 15805 [2020-12-22 12:51:08,790 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 12:51:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15805 states. [2020-12-22 12:51:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15805 to 15789. [2020-12-22 12:51:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15789 states. [2020-12-22 12:51:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15789 states to 15789 states and 20359 transitions. [2020-12-22 12:51:09,485 INFO L78 Accepts]: Start accepts. Automaton has 15789 states and 20359 transitions. Word has length 18 [2020-12-22 12:51:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:09,485 INFO L481 AbstractCegarLoop]: Abstraction has 15789 states and 20359 transitions. [2020-12-22 12:51:09,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 15789 states and 20359 transitions. [2020-12-22 12:51:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 12:51:09,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:09,493 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] [2020-12-22 12:51:09,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 12:51:09,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:09,494 INFO L82 PathProgramCache]: Analyzing trace with hash 340776562, now seen corresponding path program 1 times [2020-12-22 12:51:09,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:09,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71009576] [2020-12-22 12:51:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:09,626 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 12:51:09,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71009576] [2020-12-22 12:51:09,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:09,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:09,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291841206] [2020-12-22 12:51:09,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:09,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:09,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:09,630 INFO L87 Difference]: Start difference. First operand 15789 states and 20359 transitions. Second operand 3 states. [2020-12-22 12:51:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:10,728 INFO L93 Difference]: Finished difference Result 35281 states and 45497 transitions. [2020-12-22 12:51:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:10,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 12:51:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:10,775 INFO L225 Difference]: With dead ends: 35281 [2020-12-22 12:51:10,776 INFO L226 Difference]: Without dead ends: 19495 [2020-12-22 12:51:10,801 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 12:51:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19495 states. [2020-12-22 12:51:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19495 to 15791. [2020-12-22 12:51:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15791 states. [2020-12-22 12:51:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15791 states to 15791 states and 20361 transitions. [2020-12-22 12:51:11,558 INFO L78 Accepts]: Start accepts. Automaton has 15791 states and 20361 transitions. Word has length 22 [2020-12-22 12:51:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:11,558 INFO L481 AbstractCegarLoop]: Abstraction has 15791 states and 20361 transitions. [2020-12-22 12:51:11,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand 15791 states and 20361 transitions. [2020-12-22 12:51:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 12:51:11,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:11,560 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 12:51:11,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 12:51:11,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:11,561 INFO L82 PathProgramCache]: Analyzing trace with hash 680206091, now seen corresponding path program 1 times [2020-12-22 12:51:11,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:11,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839906989] [2020-12-22 12:51:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:11,745 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 12:51:11,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839906989] [2020-12-22 12:51:11,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:11,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:11,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67488841] [2020-12-22 12:51:11,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:11,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:11,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:11,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:11,751 INFO L87 Difference]: Start difference. First operand 15791 states and 20361 transitions. Second operand 3 states. [2020-12-22 12:51:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:12,687 INFO L93 Difference]: Finished difference Result 39973 states and 51539 transitions. [2020-12-22 12:51:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:12,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 12:51:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:12,754 INFO L225 Difference]: With dead ends: 39973 [2020-12-22 12:51:12,755 INFO L226 Difference]: Without dead ends: 24185 [2020-12-22 12:51:12,786 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 12:51:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24185 states. [2020-12-22 12:51:13,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24185 to 15803. [2020-12-22 12:51:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15803 states. [2020-12-22 12:51:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15803 states to 15803 states and 20377 transitions. [2020-12-22 12:51:13,724 INFO L78 Accepts]: Start accepts. Automaton has 15803 states and 20377 transitions. Word has length 27 [2020-12-22 12:51:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:13,724 INFO L481 AbstractCegarLoop]: Abstraction has 15803 states and 20377 transitions. [2020-12-22 12:51:13,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15803 states and 20377 transitions. [2020-12-22 12:51:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 12:51:13,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:13,726 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] [2020-12-22 12:51:13,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 12:51:13,727 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:13,727 INFO L82 PathProgramCache]: Analyzing trace with hash 503225488, now seen corresponding path program 1 times [2020-12-22 12:51:13,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:13,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195806881] [2020-12-22 12:51:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:13,906 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 12:51:13,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195806881] [2020-12-22 12:51:13,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120800177] [2020-12-22 12:51:13,907 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 12:51:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:14,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:14,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:14,743 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 12:51:14,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:14,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:14,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020445302] [2020-12-22 12:51:14,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:14,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:14,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:14,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:14,746 INFO L87 Difference]: Start difference. First operand 15803 states and 20377 transitions. Second operand 3 states. [2020-12-22 12:51:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:16,099 INFO L93 Difference]: Finished difference Result 47389 states and 61107 transitions. [2020-12-22 12:51:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:16,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 12:51:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:16,188 INFO L225 Difference]: With dead ends: 47389 [2020-12-22 12:51:16,189 INFO L226 Difference]: Without dead ends: 31589 [2020-12-22 12:51:16,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 12:51:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31589 states. [2020-12-22 12:51:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31589 to 23209. [2020-12-22 12:51:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23209 states. [2020-12-22 12:51:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 29933 transitions. [2020-12-22 12:51:17,636 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 29933 transitions. Word has length 29 [2020-12-22 12:51:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:17,638 INFO L481 AbstractCegarLoop]: Abstraction has 23209 states and 29933 transitions. [2020-12-22 12:51:17,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 29933 transitions. [2020-12-22 12:51:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 12:51:17,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:17,641 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] [2020-12-22 12:51:17,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 12:51:17,856 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:17,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1183283858, now seen corresponding path program 1 times [2020-12-22 12:51:17,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:17,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211207657] [2020-12-22 12:51:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:18,023 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 12:51:18,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211207657] [2020-12-22 12:51:18,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106450007] [2020-12-22 12:51:18,024 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 12:51:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:18,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:18,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:18,871 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 12:51:18,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:18,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:18,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064006742] [2020-12-22 12:51:18,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:18,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:18,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:18,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:18,874 INFO L87 Difference]: Start difference. First operand 23209 states and 29933 transitions. Second operand 3 states. [2020-12-22 12:51:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:19,676 INFO L93 Difference]: Finished difference Result 23233 states and 29955 transitions. [2020-12-22 12:51:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:19,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 12:51:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:19,731 INFO L225 Difference]: With dead ends: 23233 [2020-12-22 12:51:19,732 INFO L226 Difference]: Without dead ends: 23221 [2020-12-22 12:51:19,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 12:51:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23221 states. [2020-12-22 12:51:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23221 to 23209. [2020-12-22 12:51:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23209 states. [2020-12-22 12:51:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 29931 transitions. [2020-12-22 12:51:20,762 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 29931 transitions. Word has length 29 [2020-12-22 12:51:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:20,763 INFO L481 AbstractCegarLoop]: Abstraction has 23209 states and 29931 transitions. [2020-12-22 12:51:20,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 29931 transitions. [2020-12-22 12:51:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 12:51:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:20,764 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] [2020-12-22 12:51:20,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:20,980 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:20,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:20,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1183343440, now seen corresponding path program 1 times [2020-12-22 12:51:20,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:20,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597568181] [2020-12-22 12:51:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:21,122 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 12:51:21,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597568181] [2020-12-22 12:51:21,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774820378] [2020-12-22 12:51:21,123 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 12:51:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:22,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:22,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:22,117 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 12:51:22,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:22,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:22,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127480170] [2020-12-22 12:51:22,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:22,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:22,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:22,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:22,120 INFO L87 Difference]: Start difference. First operand 23209 states and 29931 transitions. Second operand 3 states. [2020-12-22 12:51:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:24,825 INFO L93 Difference]: Finished difference Result 23209 states and 29931 transitions. [2020-12-22 12:51:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:24,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 12:51:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:24,872 INFO L225 Difference]: With dead ends: 23209 [2020-12-22 12:51:24,873 INFO L226 Difference]: Without dead ends: 23207 [2020-12-22 12:51:24,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 12:51:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23207 states. [2020-12-22 12:51:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23207 to 23207. [2020-12-22 12:51:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23207 states. [2020-12-22 12:51:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23207 states to 23207 states and 29929 transitions. [2020-12-22 12:51:25,925 INFO L78 Accepts]: Start accepts. Automaton has 23207 states and 29929 transitions. Word has length 29 [2020-12-22 12:51:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:25,925 INFO L481 AbstractCegarLoop]: Abstraction has 23207 states and 29929 transitions. [2020-12-22 12:51:25,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 23207 states and 29929 transitions. [2020-12-22 12:51:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 12:51:25,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:25,926 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] [2020-12-22 12:51:26,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:26,141 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1971035396, now seen corresponding path program 1 times [2020-12-22 12:51:26,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:26,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647218032] [2020-12-22 12:51:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:26,321 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 12:51:26,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647218032] [2020-12-22 12:51:26,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358903371] [2020-12-22 12:51:26,322 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 12:51:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:27,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:27,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:27,147 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 12:51:27,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:27,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:27,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005112173] [2020-12-22 12:51:27,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:27,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:27,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:27,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:27,150 INFO L87 Difference]: Start difference. First operand 23207 states and 29929 transitions. Second operand 3 states. [2020-12-22 12:51:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:30,175 INFO L93 Difference]: Finished difference Result 23207 states and 29929 transitions. [2020-12-22 12:51:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:30,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 12:51:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:30,203 INFO L225 Difference]: With dead ends: 23207 [2020-12-22 12:51:30,203 INFO L226 Difference]: Without dead ends: 23205 [2020-12-22 12:51:30,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 12:51:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23205 states. [2020-12-22 12:51:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23205 to 23205. [2020-12-22 12:51:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23205 states. [2020-12-22 12:51:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23205 states to 23205 states and 29927 transitions. [2020-12-22 12:51:31,220 INFO L78 Accepts]: Start accepts. Automaton has 23205 states and 29927 transitions. Word has length 30 [2020-12-22 12:51:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:31,220 INFO L481 AbstractCegarLoop]: Abstraction has 23205 states and 29927 transitions. [2020-12-22 12:51:31,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 23205 states and 29927 transitions. [2020-12-22 12:51:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 12:51:31,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:31,221 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] [2020-12-22 12:51:31,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:31,433 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash -972531494, now seen corresponding path program 1 times [2020-12-22 12:51:31,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:31,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190419716] [2020-12-22 12:51:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:31,552 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 12:51:31,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190419716] [2020-12-22 12:51:31,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995186904] [2020-12-22 12:51:31,553 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 12:51:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:32,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:32,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:32,440 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 12:51:32,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:32,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:32,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489760274] [2020-12-22 12:51:32,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:32,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:32,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:32,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:32,442 INFO L87 Difference]: Start difference. First operand 23205 states and 29927 transitions. Second operand 3 states. [2020-12-22 12:51:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:35,076 INFO L93 Difference]: Finished difference Result 23205 states and 29927 transitions. [2020-12-22 12:51:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:35,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 12:51:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:35,104 INFO L225 Difference]: With dead ends: 23205 [2020-12-22 12:51:35,104 INFO L226 Difference]: Without dead ends: 23203 [2020-12-22 12:51:35,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 12:51:35,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23203 states. [2020-12-22 12:51:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23203 to 23203. [2020-12-22 12:51:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23203 states. [2020-12-22 12:51:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23203 states to 23203 states and 29925 transitions. [2020-12-22 12:51:36,061 INFO L78 Accepts]: Start accepts. Automaton has 23203 states and 29925 transitions. Word has length 31 [2020-12-22 12:51:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:36,061 INFO L481 AbstractCegarLoop]: Abstraction has 23203 states and 29925 transitions. [2020-12-22 12:51:36,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 23203 states and 29925 transitions. [2020-12-22 12:51:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 12:51:36,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:36,063 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] [2020-12-22 12:51:36,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 12:51:36,278 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash -83681594, now seen corresponding path program 1 times [2020-12-22 12:51:36,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:36,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745634384] [2020-12-22 12:51:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:36,397 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 12:51:36,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745634384] [2020-12-22 12:51:36,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353742660] [2020-12-22 12:51:36,398 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 12:51:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:37,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:37,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:37,296 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 12:51:37,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:37,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:37,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630480640] [2020-12-22 12:51:37,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:37,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:37,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:37,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:37,299 INFO L87 Difference]: Start difference. First operand 23203 states and 29925 transitions. Second operand 3 states. [2020-12-22 12:51:40,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:40,318 INFO L93 Difference]: Finished difference Result 23203 states and 29925 transitions. [2020-12-22 12:51:40,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:40,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-22 12:51:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:40,343 INFO L225 Difference]: With dead ends: 23203 [2020-12-22 12:51:40,343 INFO L226 Difference]: Without dead ends: 23176 [2020-12-22 12:51:40,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 12:51:40,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2020-12-22 12:51:41,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 23176. [2020-12-22 12:51:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23176 states. [2020-12-22 12:51:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23176 states to 23176 states and 29888 transitions. [2020-12-22 12:51:41,338 INFO L78 Accepts]: Start accepts. Automaton has 23176 states and 29888 transitions. Word has length 32 [2020-12-22 12:51:41,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:41,338 INFO L481 AbstractCegarLoop]: Abstraction has 23176 states and 29888 transitions. [2020-12-22 12:51:41,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 23176 states and 29888 transitions. [2020-12-22 12:51:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 12:51:41,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:41,340 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] [2020-12-22 12:51:41,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:41,547 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:41,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1242889825, now seen corresponding path program 1 times [2020-12-22 12:51:41,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:41,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196141842] [2020-12-22 12:51:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:51:41,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196141842] [2020-12-22 12:51:41,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274598400] [2020-12-22 12:51:41,676 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 12:51:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:42,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 12:51:42,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 12:51:42,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:42,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:42,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331096612] [2020-12-22 12:51:42,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:42,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:42,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:42,635 INFO L87 Difference]: Start difference. First operand 23176 states and 29888 transitions. Second operand 3 states. [2020-12-22 12:51:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:43,703 INFO L93 Difference]: Finished difference Result 46358 states and 59786 transitions. [2020-12-22 12:51:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:43,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 12:51:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:43,729 INFO L225 Difference]: With dead ends: 46358 [2020-12-22 12:51:43,729 INFO L226 Difference]: Without dead ends: 23185 [2020-12-22 12:51:43,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 12:51:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2020-12-22 12:51:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 23178. [2020-12-22 12:51:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23178 states. [2020-12-22 12:51:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23178 states to 23178 states and 29890 transitions. [2020-12-22 12:51:44,843 INFO L78 Accepts]: Start accepts. Automaton has 23178 states and 29890 transitions. Word has length 47 [2020-12-22 12:51:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:44,843 INFO L481 AbstractCegarLoop]: Abstraction has 23178 states and 29890 transitions. [2020-12-22 12:51:44,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23178 states and 29890 transitions. [2020-12-22 12:51:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 12:51:44,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:44,846 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] [2020-12-22 12:51:45,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:51:45,055 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:45,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1524248982, now seen corresponding path program 1 times [2020-12-22 12:51:45,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:45,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320231548] [2020-12-22 12:51:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:45,207 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 12:51:45,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320231548] [2020-12-22 12:51:45,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416937369] [2020-12-22 12:51:45,208 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 12:51:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:46,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:51:46,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:51:46,148 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 12:51:46,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:51:46,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:51:46,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827759862] [2020-12-22 12:51:46,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:46,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:46,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:51:46,150 INFO L87 Difference]: Start difference. First operand 23178 states and 29890 transitions. Second operand 3 states. [2020-12-22 12:51:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:49,119 INFO L93 Difference]: Finished difference Result 23178 states and 29890 transitions. [2020-12-22 12:51:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:49,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 12:51:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:49,120 INFO L225 Difference]: With dead ends: 23178 [2020-12-22 12:51:49,120 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 12:51:49,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 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 12:51:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 12:51:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 12:51:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 12:51:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 12:51:49,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-12-22 12:51:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:49,144 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 12:51:49,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 12:51:49,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 12:51:49,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 12:51:49,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 12:51:51,855 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18