/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 09:49:49,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 09:49:49,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 09:49:49,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 09:49:49,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 09:49:49,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 09:49:49,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 09:49:49,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 09:49:49,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 09:49:49,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 09:49:49,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 09:49:49,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 09:49:49,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 09:49:49,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 09:49:49,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 09:49:49,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 09:49:49,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 09:49:49,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 09:49:49,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 09:49:49,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 09:49:49,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 09:49:49,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 09:49:49,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 09:49:49,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 09:49:49,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 09:49:49,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 09:49:49,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 09:49:49,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 09:49:49,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 09:49:49,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 09:49:49,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 09:49:49,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 09:49:49,760 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 09:49:49,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 09:49:49,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 09:49:49,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 09:49:49,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 09:49:49,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 09:49:49,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 09:49:49,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 09:49:49,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 09:49:49,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 09:49:49,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 09:49:49,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 09:49:49,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 09:49:49,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 09:49:49,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 09:49:49,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 09:49:49,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 09:49:49,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 09:49:49,765 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 09:49:49,767 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 09:49:50,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 09:49:50,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 09:49:50,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 09:49:50,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 09:49:50,100 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 09:49:50,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-05-06 09:49:50,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf035e104/2699dcef0bce4d69a3ff69e60bd15b6e/FLAGb651472c2 [2021-05-06 09:49:50,519 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 09:49:50,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-05-06 09:49:50,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf035e104/2699dcef0bce4d69a3ff69e60bd15b6e/FLAGb651472c2 [2021-05-06 09:49:50,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf035e104/2699dcef0bce4d69a3ff69e60bd15b6e [2021-05-06 09:49:50,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 09:49:50,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 09:49:50,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 09:49:50,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 09:49:50,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 09:49:50,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:49:50" (1/1) ... [2021-05-06 09:49:50,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f40e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:50, skipping insertion in model container [2021-05-06 09:49:50,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:49:50" (1/1) ... [2021-05-06 09:49:50,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 09:49:50,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 09:49:51,081 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-05-06 09:49:51,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:49:51,097 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 09:49:51,106 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-05-06 09:49:51,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:49:51,123 INFO L208 MainTranslator]: Completed translation [2021-05-06 09:49:51,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51 WrapperNode [2021-05-06 09:49:51,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 09:49:51,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 09:49:51,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 09:49:51,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 09:49:51,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 09:49:51,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 09:49:51,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 09:49:51,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 09:49:51,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (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 [2021-05-06 09:49:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 09:49:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 09:49:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 09:49:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 09:49:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 09:49:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 09:49:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 09:49:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 09:49:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 09:49:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 09:49:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 09:49:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 09:49:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 09:49:51,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 09:49:51,445 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 09:49:51,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:49:51 BoogieIcfgContainer [2021-05-06 09:49:51,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 09:49:51,447 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 09:49:51,447 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 09:49:51,447 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 09:49:51,449 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:49:51" (1/1) ... [2021-05-06 09:49:51,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:49:51 BasicIcfg [2021-05-06 09:49:51,462 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 09:49:51,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 09:49:51,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 09:49:51,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 09:49:51,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 09:49:50" (1/4) ... [2021-05-06 09:49:51,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3051d60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:49:51, skipping insertion in model container [2021-05-06 09:49:51,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:49:51" (2/4) ... [2021-05-06 09:49:51,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3051d60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:49:51, skipping insertion in model container [2021-05-06 09:49:51,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:49:51" (3/4) ... [2021-05-06 09:49:51,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3051d60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:49:51, skipping insertion in model container [2021-05-06 09:49:51,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:49:51" (4/4) ... [2021-05-06 09:49:51,468 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.cJordan [2021-05-06 09:49:51,476 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 09:49:51,480 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 09:49:51,495 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 09:49:51,509 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 09:49:51,509 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 09:49:51,509 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 09:49:51,509 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 09:49:51,509 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 09:49:51,509 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 09:49:51,509 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 09:49:51,509 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 09:49:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 09:49:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 09:49:51,524 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:51,524 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:51,525 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:51,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:51,529 INFO L82 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2021-05-06 09:49:51,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:51,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973279002] [2021-05-06 09:49:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 09:49:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 09:49:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 09:49:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:51,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:51,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973279002] [2021-05-06 09:49:51,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973279002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:49:51,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:49:51,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 09:49:51,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437729096] [2021-05-06 09:49:51,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 09:49:51,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 09:49:51,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:49:51,731 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:49:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:51,795 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-06 09:49:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 09:49:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 09:49:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:51,802 INFO L225 Difference]: With dead ends: 31 [2021-05-06 09:49:51,803 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 09:49:51,804 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:49:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 09:49:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-06 09:49:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 09:49:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-06 09:49:51,831 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-05-06 09:49:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:51,831 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-06 09:49:51,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:49:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-06 09:49:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 09:49:51,833 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:51,833 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:51,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 09:49:51,833 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2021-05-06 09:49:51,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:51,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048029898] [2021-05-06 09:49:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:51,852 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:51,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755874993] [2021-05-06 09:49:51,853 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 [2021-05-06 09:49:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:51,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 09:49:51,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:52,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:52,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:52,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048029898] [2021-05-06 09:49:52,131 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:52,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755874993] [2021-05-06 09:49:52,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755874993] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:49:52,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:49:52,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 09:49:52,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085198416] [2021-05-06 09:49:52,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 09:49:52,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:52,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 09:49:52,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 09:49:52,136 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:49:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:52,147 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-06 09:49:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 09:49:52,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 09:49:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:52,149 INFO L225 Difference]: With dead ends: 27 [2021-05-06 09:49:52,150 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 09:49:52,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 09:49:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 09:49:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 09:49:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 09:49:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-06 09:49:52,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-05-06 09:49:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:52,161 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-06 09:49:52,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:49:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-06 09:49:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 09:49:52,166 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:52,166 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:52,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 09:49:52,381 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:52,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2021-05-06 09:49:52,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:52,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56692031] [2021-05-06 09:49:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:52,399 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:52,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447470803] [2021-05-06 09:49:52,400 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 [2021-05-06 09:49:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:52,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 09:49:52,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 09:49:52,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:52,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56692031] [2021-05-06 09:49:52,548 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:52,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447470803] [2021-05-06 09:49:52,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447470803] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:49:52,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:49:52,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 09:49:52,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423347746] [2021-05-06 09:49:52,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:49:52,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:49:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:49:52,550 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:49:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:52,613 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-05-06 09:49:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:49:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-05-06 09:49:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:52,615 INFO L225 Difference]: With dead ends: 35 [2021-05-06 09:49:52,615 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 09:49:52,615 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:49:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 09:49:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-05-06 09:49:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 09:49:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-06 09:49:52,620 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2021-05-06 09:49:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:52,621 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-06 09:49:52,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:49:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-06 09:49:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 09:49:52,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:52,622 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:52,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:52,845 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:52,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2021-05-06 09:49:52,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:52,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186417882] [2021-05-06 09:49:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:52,859 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:52,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213932155] [2021-05-06 09:49:52,859 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 [2021-05-06 09:49:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:52,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 09:49:52,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:53,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:53,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:53,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186417882] [2021-05-06 09:49:53,028 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:53,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213932155] [2021-05-06 09:49:53,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213932155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:53,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:53,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:49:53,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928764007] [2021-05-06 09:49:53,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:49:53,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:53,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:49:53,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:49:53,030 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 09:49:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:53,094 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-05-06 09:49:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:49:53,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-05-06 09:49:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:53,096 INFO L225 Difference]: With dead ends: 37 [2021-05-06 09:49:53,096 INFO L226 Difference]: Without dead ends: 34 [2021-05-06 09:49:53,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:49:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-06 09:49:53,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-05-06 09:49:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 09:49:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-05-06 09:49:53,100 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-05-06 09:49:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:53,101 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-05-06 09:49:53,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 09:49:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-05-06 09:49:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 09:49:53,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:53,102 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:53,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:53,325 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:53,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:53,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2021-05-06 09:49:53,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:53,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358464434] [2021-05-06 09:49:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:53,336 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:53,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257328219] [2021-05-06 09:49:53,337 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 [2021-05-06 09:49:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:53,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 09:49:53,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:53,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:53,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:53,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358464434] [2021-05-06 09:49:53,488 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:53,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257328219] [2021-05-06 09:49:53,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257328219] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:53,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:53,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 09:49:53,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672367314] [2021-05-06 09:49:53,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 09:49:53,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 09:49:53,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 09:49:53,489 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 09:49:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:53,521 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 09:49:53,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 09:49:53,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-05-06 09:49:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:53,522 INFO L225 Difference]: With dead ends: 38 [2021-05-06 09:49:53,522 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 09:49:53,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:49:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 09:49:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 09:49:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 09:49:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 09:49:53,526 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2021-05-06 09:49:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:53,527 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 09:49:53,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 09:49:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 09:49:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 09:49:53,528 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:53,528 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:53,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:53,751 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:53,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1377493560, now seen corresponding path program 2 times [2021-05-06 09:49:53,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:53,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845944622] [2021-05-06 09:49:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:53,762 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:53,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774785590] [2021-05-06 09:49:53,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:53,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:49:53,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:53,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 09:49:53,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:53,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:53,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:53,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845944622] [2021-05-06 09:49:53,945 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:53,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774785590] [2021-05-06 09:49:53,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774785590] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:53,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:53,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 09:49:53,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617869740] [2021-05-06 09:49:53,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 09:49:53,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 09:49:53,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:49:53,947 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 09:49:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:53,998 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-05-06 09:49:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:49:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2021-05-06 09:49:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:54,002 INFO L225 Difference]: With dead ends: 47 [2021-05-06 09:49:54,002 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 09:49:54,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:49:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 09:49:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-06 09:49:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 09:49:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-05-06 09:49:54,013 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 41 [2021-05-06 09:49:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:54,013 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-05-06 09:49:54,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 09:49:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-05-06 09:49:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-06 09:49:54,015 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:54,015 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:54,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-06 09:49:54,237 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:54,238 INFO L82 PathProgramCache]: Analyzing trace with hash 489214531, now seen corresponding path program 3 times [2021-05-06 09:49:54,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:54,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382299403] [2021-05-06 09:49:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:54,257 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:54,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915746935] [2021-05-06 09:49:54,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:54,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 09:49:54,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:54,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 09:49:54,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:54,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:54,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:54,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382299403] [2021-05-06 09:49:54,483 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:54,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915746935] [2021-05-06 09:49:54,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915746935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:54,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:54,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 09:49:54,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195873109] [2021-05-06 09:49:54,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 09:49:54,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:54,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 09:49:54,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 09:49:54,485 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 09:49:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:54,546 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-06 09:49:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 09:49:54,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2021-05-06 09:49:54,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:54,548 INFO L225 Difference]: With dead ends: 56 [2021-05-06 09:49:54,548 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 09:49:54,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:49:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 09:49:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 09:49:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 09:49:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 09:49:54,552 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2021-05-06 09:49:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:54,552 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 09:49:54,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 09:49:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 09:49:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-06 09:49:54,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:54,553 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:54,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:54,771 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:54,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:54,771 INFO L82 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 4 times [2021-05-06 09:49:54,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:54,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041414401] [2021-05-06 09:49:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:54,780 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:54,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155525719] [2021-05-06 09:49:54,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:54,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:49:54,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:54,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 09:49:54,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:54,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:55,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:55,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041414401] [2021-05-06 09:49:55,031 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:55,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155525719] [2021-05-06 09:49:55,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155525719] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:55,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:55,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:49:55,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496166092] [2021-05-06 09:49:55,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:49:55,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:55,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:49:55,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:49:55,038 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 09:49:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:55,120 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-05-06 09:49:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 09:49:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 59 [2021-05-06 09:49:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:55,121 INFO L225 Difference]: With dead ends: 65 [2021-05-06 09:49:55,122 INFO L226 Difference]: Without dead ends: 65 [2021-05-06 09:49:55,122 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-06 09:49:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-06 09:49:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-06 09:49:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 09:49:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-05-06 09:49:55,126 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59 [2021-05-06 09:49:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:55,126 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-05-06 09:49:55,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 09:49:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-05-06 09:49:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-06 09:49:55,127 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:55,127 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:55,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:55,328 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1572135395, now seen corresponding path program 5 times [2021-05-06 09:49:55,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:55,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464660608] [2021-05-06 09:49:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:55,338 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:55,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038044564] [2021-05-06 09:49:55,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:55,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-06 09:49:55,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:55,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 09:49:55,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:55,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:55,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:55,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464660608] [2021-05-06 09:49:55,589 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:55,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038044564] [2021-05-06 09:49:55,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038044564] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:55,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:55,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 09:49:55,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109995105] [2021-05-06 09:49:55,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 09:49:55,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:55,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 09:49:55,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-06 09:49:55,591 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 09:49:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:55,696 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-06 09:49:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 09:49:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-05-06 09:49:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:55,698 INFO L225 Difference]: With dead ends: 74 [2021-05-06 09:49:55,698 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 09:49:55,698 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-06 09:49:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 09:49:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 09:49:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 11 states have call successors, (11), 10 states have call predecessors, (11), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 09:49:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 09:49:55,702 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2021-05-06 09:49:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:55,702 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 09:49:55,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 09:49:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 09:49:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 09:49:55,704 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:55,704 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:55,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-06 09:49:55,919 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:55,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1651262200, now seen corresponding path program 6 times [2021-05-06 09:49:55,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:55,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913697422] [2021-05-06 09:49:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:55,940 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:55,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917942359] [2021-05-06 09:49:55,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:56,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-06 09:49:56,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:56,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 09:49:56,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:56,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:56,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:56,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913697422] [2021-05-06 09:49:56,231 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:56,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917942359] [2021-05-06 09:49:56,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917942359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:56,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:56,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 09:49:56,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007417769] [2021-05-06 09:49:56,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 09:49:56,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:56,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 09:49:56,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:49:56,232 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 09:49:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:56,330 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-05-06 09:49:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 09:49:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-05-06 09:49:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:56,332 INFO L225 Difference]: With dead ends: 83 [2021-05-06 09:49:56,332 INFO L226 Difference]: Without dead ends: 83 [2021-05-06 09:49:56,332 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-06 09:49:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-06 09:49:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-06 09:49:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 09:49:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-05-06 09:49:56,337 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 77 [2021-05-06 09:49:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:56,337 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-05-06 09:49:56,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 09:49:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-05-06 09:49:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-06 09:49:56,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:56,338 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:56,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:56,549 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:56,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:56,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1720170109, now seen corresponding path program 7 times [2021-05-06 09:49:56,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:56,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007063354] [2021-05-06 09:49:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:56,555 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:56,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686288634] [2021-05-06 09:49:56,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:49:56,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 09:49:56,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:56,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 203 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:56,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:56,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007063354] [2021-05-06 09:49:56,902 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:56,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686288634] [2021-05-06 09:49:56,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686288634] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:56,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:56,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 09:49:56,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786221720] [2021-05-06 09:49:56,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 09:49:56,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:56,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 09:49:56,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:49:56,904 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 09:49:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:57,022 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-05-06 09:49:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 09:49:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 86 [2021-05-06 09:49:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:57,024 INFO L225 Difference]: With dead ends: 92 [2021-05-06 09:49:57,024 INFO L226 Difference]: Without dead ends: 92 [2021-05-06 09:49:57,024 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-06 09:49:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-06 09:49:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-06 09:49:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 13 states have call successors, (13), 12 states have call predecessors, (13), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 09:49:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-06 09:49:57,029 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-05-06 09:49:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:57,029 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-06 09:49:57,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 09:49:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-06 09:49:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 09:49:57,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:57,030 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:57,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:57,254 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash -327979176, now seen corresponding path program 8 times [2021-05-06 09:49:57,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:57,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504163190] [2021-05-06 09:49:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:57,262 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:57,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438495965] [2021-05-06 09:49:57,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:57,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:49:57,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:57,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 09:49:57,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:57,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:57,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:57,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504163190] [2021-05-06 09:49:57,578 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:57,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438495965] [2021-05-06 09:49:57,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438495965] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:57,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:57,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-06 09:49:57,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990937442] [2021-05-06 09:49:57,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 09:49:57,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:57,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 09:49:57,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-06 09:49:57,579 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 09:49:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:57,720 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-05-06 09:49:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 09:49:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 95 [2021-05-06 09:49:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:57,721 INFO L225 Difference]: With dead ends: 101 [2021-05-06 09:49:57,722 INFO L226 Difference]: Without dead ends: 101 [2021-05-06 09:49:57,722 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-06 09:49:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-06 09:49:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-06 09:49:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 14 states have call successors, (14), 13 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 09:49:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-05-06 09:49:57,726 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 95 [2021-05-06 09:49:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:57,727 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-05-06 09:49:57,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 09:49:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-05-06 09:49:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-06 09:49:57,728 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:57,728 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:57,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-06 09:49:57,941 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:57,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1572009693, now seen corresponding path program 9 times [2021-05-06 09:49:57,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:57,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960452704] [2021-05-06 09:49:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:57,948 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:57,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520003119] [2021-05-06 09:49:57,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:58,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 09:49:58,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:49:58,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 09:49:58,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:49:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:49:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:49:58,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:49:58,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960452704] [2021-05-06 09:49:58,324 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:49:58,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520003119] [2021-05-06 09:49:58,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520003119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:49:58,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:49:58,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 09:49:58,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338703347] [2021-05-06 09:49:58,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 09:49:58,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:49:58,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 09:49:58,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-06 09:49:58,325 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 09:49:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:49:58,471 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-05-06 09:49:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 09:49:58,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 104 [2021-05-06 09:49:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:49:58,472 INFO L225 Difference]: With dead ends: 110 [2021-05-06 09:49:58,473 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 09:49:58,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-06 09:49:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 09:49:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-06 09:49:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 09:49:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-06 09:49:58,477 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 104 [2021-05-06 09:49:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:49:58,478 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-06 09:49:58,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 09:49:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-06 09:49:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 09:49:58,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:49:58,479 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:49:58,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-06 09:49:58,689 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:49:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:49:58,689 INFO L82 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 10 times [2021-05-06 09:49:58,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:49:58,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517458349] [2021-05-06 09:49:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:49:58,695 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:49:58,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68369973] [2021-05-06 09:49:58,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:49:58,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:49:58,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-06 09:49:58,772 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 09:49:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 09:49:58,804 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 09:49:58,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 09:49:58,912 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 09:49:59,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 09:49:59,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:49:59 BasicIcfg [2021-05-06 09:49:59,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 09:49:59,192 INFO L168 Benchmark]: Toolchain (without parser) took 8238.32 ms. Allocated memory was 199.2 MB in the beginning and 287.3 MB in the end (delta: 88.1 MB). Free memory was 164.5 MB in the beginning and 129.7 MB in the end (delta: 34.8 MB). Peak memory consumption was 123.9 MB. Max. memory is 8.0 GB. [2021-05-06 09:49:59,192 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 199.2 MB. Free memory is still 181.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 09:49:59,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.01 ms. Allocated memory is still 199.2 MB. Free memory was 164.3 MB in the beginning and 154.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 09:49:59,192 INFO L168 Benchmark]: Boogie Preprocessor took 57.84 ms. Allocated memory is still 199.2 MB. Free memory was 154.7 MB in the beginning and 182.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-05-06 09:49:59,192 INFO L168 Benchmark]: RCFGBuilder took 262.76 ms. Allocated memory is still 199.2 MB. Free memory was 182.5 MB in the beginning and 168.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 09:49:59,192 INFO L168 Benchmark]: IcfgTransformer took 15.57 ms. Allocated memory is still 199.2 MB. Free memory was 168.2 MB in the beginning and 166.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 09:49:59,192 INFO L168 Benchmark]: TraceAbstraction took 7727.67 ms. Allocated memory was 199.2 MB in the beginning and 287.3 MB in the end (delta: 88.1 MB). Free memory was 166.5 MB in the beginning and 129.7 MB in the end (delta: 36.8 MB). Peak memory consumption was 125.9 MB. Max. memory is 8.0 GB. [2021-05-06 09:49:59,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 199.2 MB. Free memory is still 181.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 167.01 ms. Allocated memory is still 199.2 MB. Free memory was 164.3 MB in the beginning and 154.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.84 ms. Allocated memory is still 199.2 MB. Free memory was 154.7 MB in the beginning and 182.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 262.76 ms. Allocated memory is still 199.2 MB. Free memory was 182.5 MB in the beginning and 168.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 15.57 ms. Allocated memory is still 199.2 MB. Free memory was 168.2 MB in the beginning and 166.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7727.67 ms. Allocated memory was 199.2 MB in the beginning and 287.3 MB in the end (delta: 88.1 MB). Free memory was 166.5 MB in the beginning and 129.7 MB in the end (delta: 36.8 MB). Peak memory consumption was 125.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=20, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=11, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=11, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] COND FALSE !(counter++<10) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7628.9ms, OverallIterations: 14, TraceHistogramMax: 11, EmptinessCheckTime: 18.3ms, AutomataDifference: 1094.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 377 SDtfs, 197 SDslu, 1018 SDs, 0 SdLazy, 451 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 441.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 735 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 785.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=13, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 74.8ms AutomataMinimizationTime, 13 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 162.6ms SsaConstructionTime, 468.2ms SatisfiabilityAnalysisTime, 2111.8ms InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 696 ConstructedInterpolants, 0 QuantifiedInterpolants, 1958 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2570 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 143/1314 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...