/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/sqrt1-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 10:53:53,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 10:53:53,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 10:53:53,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 10:53:53,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 10:53:53,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 10:53:53,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 10:53:53,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 10:53:53,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 10:53:53,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 10:53:53,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 10:53:53,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 10:53:53,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 10:53:53,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 10:53:53,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 10:53:53,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 10:53:53,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 10:53:53,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 10:53:53,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 10:53:53,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 10:53:53,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 10:53:53,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 10:53:53,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 10:53:53,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 10:53:53,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 10:53:53,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 10:53:53,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 10:53:53,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 10:53:53,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 10:53:53,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 10:53:53,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 10:53:53,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 10:53:53,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 10:53:53,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 10:53:53,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 10:53:53,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 10:53:53,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 10:53:53,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 10:53:53,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 10:53:53,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 10:53:53,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 10:53:53,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 10:53:53,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 10:53:53,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 10:53:53,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 10:53:53,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 10:53:53,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 10:53:53,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 10:53:53,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 10:53:53,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 10:53:53,283 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 10:53:53,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 10:53:53,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 10:53:53,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 10:53:53,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 10:53:53,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 10:53:53,543 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 10:53:53,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2021-05-06 10:53:53,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ecc5d2af/704188c56bc34d93a4f124e86bfbc2d7/FLAGc8a80652f [2021-05-06 10:53:53,926 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 10:53:53,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2021-05-06 10:53:53,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ecc5d2af/704188c56bc34d93a4f124e86bfbc2d7/FLAGc8a80652f [2021-05-06 10:53:53,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ecc5d2af/704188c56bc34d93a4f124e86bfbc2d7 [2021-05-06 10:53:53,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 10:53:53,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 10:53:53,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 10:53:53,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 10:53:53,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 10:53:53,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:53:53" (1/1) ... [2021-05-06 10:53:53,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae4a220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:53, skipping insertion in model container [2021-05-06 10:53:53,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:53:53" (1/1) ... [2021-05-06 10:53:53,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 10:53:53,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 10:53:54,089 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/sqrt1-ll_valuebound2.c[520,533] [2021-05-06 10:53:54,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:53:54,114 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 10:53:54,124 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/sqrt1-ll_valuebound2.c[520,533] [2021-05-06 10:53:54,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:53:54,150 INFO L208 MainTranslator]: Completed translation [2021-05-06 10:53:54,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54 WrapperNode [2021-05-06 10:53:54,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 10:53:54,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 10:53:54,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 10:53:54,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 10:53:54,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 10:53:54,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 10:53:54,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 10:53:54,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 10:53:54,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (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 10:53:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 10:53:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 10:53:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 10:53:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 10:53:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 10:53:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 10:53:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 10:53:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 10:53:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 10:53:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 10:53:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 10:53:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 10:53:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 10:53:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 10:53:54,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 10:53:54,538 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 10:53:54,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:53:54 BoogieIcfgContainer [2021-05-06 10:53:54,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 10:53:54,540 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 10:53:54,540 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 10:53:54,541 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 10:53:54,542 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:53:54" (1/1) ... [2021-05-06 10:53:54,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:53:54 BasicIcfg [2021-05-06 10:53:54,561 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 10:53:54,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 10:53:54,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 10:53:54,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 10:53:54,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 10:53:53" (1/4) ... [2021-05-06 10:53:54,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2900149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:53:54, skipping insertion in model container [2021-05-06 10:53:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:54" (2/4) ... [2021-05-06 10:53:54,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2900149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:53:54, skipping insertion in model container [2021-05-06 10:53:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:53:54" (3/4) ... [2021-05-06 10:53:54,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2900149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:53:54, skipping insertion in model container [2021-05-06 10:53:54,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:53:54" (4/4) ... [2021-05-06 10:53:54,566 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound2.cJordan [2021-05-06 10:53:54,570 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 10:53:54,572 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 10:53:54,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 10:53:54,631 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 10:53:54,632 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 10:53:54,632 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 10:53:54,632 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 10:53:54,632 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 10:53:54,632 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 10:53:54,632 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 10:53:54,632 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 10:53:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 10:53:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 10:53:54,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:54,658 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:54,658 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:54,661 INFO L82 PathProgramCache]: Analyzing trace with hash -179702132, now seen corresponding path program 1 times [2021-05-06 10:53:54,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:54,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896637435] [2021-05-06 10:53:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 10:53:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:54,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 10:53:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:53:54,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:54,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896637435] [2021-05-06 10:53:54,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896637435] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:54,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:54,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 10:53:54,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041650178] [2021-05-06 10:53:54,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 10:53:54,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:54,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 10:53:54,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:53:54,919 INFO L87 Difference]: Start difference. First operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:54,987 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-05-06 10:53:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 10:53:54,989 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 10:53:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:54,994 INFO L225 Difference]: With dead ends: 31 [2021-05-06 10:53:54,994 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 10:53:54,995 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:53:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 10:53:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-06 10:53:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 10:53:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-05-06 10:53:55,023 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2021-05-06 10:53:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:55,024 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-05-06 10:53:55,024 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-05-06 10:53:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 10:53:55,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:55,025 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:55,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 10:53:55,025 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:55,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1985279762, now seen corresponding path program 1 times [2021-05-06 10:53:55,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:55,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360918108] [2021-05-06 10:53:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 10:53:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 10:53:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:53:55,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:55,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360918108] [2021-05-06 10:53:55,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360918108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:55,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:55,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 10:53:55,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234561619] [2021-05-06 10:53:55,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:55,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:55,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:55,183 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:55,434 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-06 10:53:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 10:53:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 10:53:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:55,436 INFO L225 Difference]: With dead ends: 38 [2021-05-06 10:53:55,436 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 10:53:55,437 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 10:53:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 10:53:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-06 10:53:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 10:53:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-05-06 10:53:55,444 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 17 [2021-05-06 10:53:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:55,444 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-05-06 10:53:55,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-05-06 10:53:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 10:53:55,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:55,445 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:55,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 10:53:55,445 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1146988413, now seen corresponding path program 1 times [2021-05-06 10:53:55,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:55,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820835489] [2021-05-06 10:53:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:55,472 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:55,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133966230] [2021-05-06 10:53:55,472 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 10:53:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:55,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:53:55,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:53:55,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:55,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820835489] [2021-05-06 10:53:55,602 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:55,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133966230] [2021-05-06 10:53:55,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133966230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:55,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:55,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 10:53:55,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256332617] [2021-05-06 10:53:55,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:53:55,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:55,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:53:55,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:53:55,604 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 10:53:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:55,644 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-06 10:53:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:53:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 10:53:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:55,647 INFO L225 Difference]: With dead ends: 42 [2021-05-06 10:53:55,647 INFO L226 Difference]: Without dead ends: 42 [2021-05-06 10:53:55,647 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-06 10:53:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-05-06 10:53:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 10:53:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-05-06 10:53:55,677 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2021-05-06 10:53:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:55,677 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-05-06 10:53:55,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 10:53:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2021-05-06 10:53:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 10:53:55,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:55,678 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:55,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 10:53:55,880 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:55,880 INFO L82 PathProgramCache]: Analyzing trace with hash -88951989, now seen corresponding path program 1 times [2021-05-06 10:53:55,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:55,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643664108] [2021-05-06 10:53:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:55,887 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:55,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569428826] [2021-05-06 10:53:55,888 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 10:53:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:55,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:53:55,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:56,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 10:53:56,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:56,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643664108] [2021-05-06 10:53:56,041 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:56,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569428826] [2021-05-06 10:53:56,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569428826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:56,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:56,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 10:53:56,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473293378] [2021-05-06 10:53:56,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:53:56,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:56,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:53:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:53:56,043 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 10:53:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:56,071 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-05-06 10:53:56,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:53:56,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-05-06 10:53:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:56,073 INFO L225 Difference]: With dead ends: 46 [2021-05-06 10:53:56,073 INFO L226 Difference]: Without dead ends: 43 [2021-05-06 10:53:56,073 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-06 10:53:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-06 10:53:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 10:53:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-05-06 10:53:56,077 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 27 [2021-05-06 10:53:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:56,077 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-05-06 10:53:56,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 10:53:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-05-06 10:53:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-06 10:53:56,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:56,078 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:56,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:56,296 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash 196845204, now seen corresponding path program 1 times [2021-05-06 10:53:56,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:56,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680852132] [2021-05-06 10:53:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:56,304 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:56,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016491812] [2021-05-06 10:53:56,304 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 10:53:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:56,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 10:53:56,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 10:53:56,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:56,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680852132] [2021-05-06 10:53:56,483 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:56,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016491812] [2021-05-06 10:53:56,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016491812] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:56,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:56,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:53:56,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080599741] [2021-05-06 10:53:56,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:56,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:56,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:56,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:56,485 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 10:53:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:56,532 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-05-06 10:53:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:53:56,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-05-06 10:53:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:56,533 INFO L225 Difference]: With dead ends: 55 [2021-05-06 10:53:56,533 INFO L226 Difference]: Without dead ends: 55 [2021-05-06 10:53:56,534 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-06 10:53:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-05-06 10:53:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 10:53:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-05-06 10:53:56,538 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 34 [2021-05-06 10:53:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:56,538 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-05-06 10:53:56,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 10:53:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-05-06 10:53:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 10:53:56,539 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:56,539 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:56,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:56,753 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash -374953577, now seen corresponding path program 2 times [2021-05-06 10:53:56,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:56,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150640324] [2021-05-06 10:53:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:56,771 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:56,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826783676] [2021-05-06 10:53:56,772 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 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 10:53:56,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 10:53:56,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:53:56,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 10:53:56,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:56,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 10:53:56,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:56,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150640324] [2021-05-06 10:53:56,962 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:56,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826783676] [2021-05-06 10:53:56,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826783676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:56,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:56,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:53:56,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208813476] [2021-05-06 10:53:56,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:56,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:56,963 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-06 10:53:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:57,019 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-05-06 10:53:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:53:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2021-05-06 10:53:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:57,022 INFO L225 Difference]: With dead ends: 59 [2021-05-06 10:53:57,022 INFO L226 Difference]: Without dead ends: 59 [2021-05-06 10:53:57,023 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-06 10:53:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-06 10:53:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 10:53:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-05-06 10:53:57,039 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 39 [2021-05-06 10:53:57,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:57,039 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-05-06 10:53:57,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-06 10:53:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-05-06 10:53:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-06 10:53:57,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:57,040 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:57,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:57,265 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash -786894479, now seen corresponding path program 3 times [2021-05-06 10:53:57,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:57,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878168632] [2021-05-06 10:53:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:57,271 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:57,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131028034] [2021-05-06 10:53:57,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:57,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-06 10:53:57,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:53:57,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 10:53:57,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:57,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-06 10:53:57,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:57,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878168632] [2021-05-06 10:53:57,440 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:57,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131028034] [2021-05-06 10:53:57,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131028034] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:57,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:57,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:53:57,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601640205] [2021-05-06 10:53:57,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:57,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:57,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:57,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:57,441 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 10:53:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:57,520 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-05-06 10:53:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:53:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-05-06 10:53:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:57,522 INFO L225 Difference]: With dead ends: 63 [2021-05-06 10:53:57,522 INFO L226 Difference]: Without dead ends: 60 [2021-05-06 10:53:57,522 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-06 10:53:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-06 10:53:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 10:53:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-05-06 10:53:57,526 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 44 [2021-05-06 10:53:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:57,526 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-05-06 10:53:57,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 10:53:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-05-06 10:53:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-06 10:53:57,527 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:57,527 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:57,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-06 10:53:57,747 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1256212910, now seen corresponding path program 4 times [2021-05-06 10:53:57,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:57,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029972514] [2021-05-06 10:53:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:57,755 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:57,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705251666] [2021-05-06 10:53:57,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:57,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 10:53:57,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:53:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 10:53:57,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:57,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:57,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-06 10:53:58,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:58,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029972514] [2021-05-06 10:53:58,086 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:58,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705251666] [2021-05-06 10:53:58,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705251666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:58,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:58,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 10:53:58,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510495985] [2021-05-06 10:53:58,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 10:53:58,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:58,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 10:53:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:58,088 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 10:53:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:58,150 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-05-06 10:53:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 10:53:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2021-05-06 10:53:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:58,151 INFO L225 Difference]: With dead ends: 46 [2021-05-06 10:53:58,151 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 10:53:58,151 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-06 10:53:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 10:53:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 10:53:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 10:53:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 10:53:58,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-05-06 10:53:58,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:58,152 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 10:53:58,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 10:53:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 10:53:58,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 10:53:58,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:58,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:53:58 BasicIcfg [2021-05-06 10:53:58,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 10:53:58,356 INFO L168 Benchmark]: Toolchain (without parser) took 4408.12 ms. Allocated memory was 207.6 MB in the beginning and 265.3 MB in the end (delta: 57.7 MB). Free memory was 172.4 MB in the beginning and 184.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 46.5 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 207.6 MB. Free memory is still 189.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.08 ms. Allocated memory is still 207.6 MB. Free memory was 172.2 MB in the beginning and 162.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L168 Benchmark]: Boogie Preprocessor took 58.59 ms. Allocated memory is still 207.6 MB. Free memory was 162.4 MB in the beginning and 190.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L168 Benchmark]: RCFGBuilder took 328.18 ms. Allocated memory is still 207.6 MB. Free memory was 190.4 MB in the beginning and 176.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L168 Benchmark]: IcfgTransformer took 21.49 ms. Allocated memory is still 207.6 MB. Free memory was 176.0 MB in the beginning and 174.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L168 Benchmark]: TraceAbstraction took 3793.65 ms. Allocated memory was 207.6 MB in the beginning and 265.3 MB in the end (delta: 57.7 MB). Free memory was 173.9 MB in the beginning and 184.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:58,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 207.6 MB. Free memory is still 189.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 201.08 ms. Allocated memory is still 207.6 MB. Free memory was 172.2 MB in the beginning and 162.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.59 ms. Allocated memory is still 207.6 MB. Free memory was 162.4 MB in the beginning and 190.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 328.18 ms. Allocated memory is still 207.6 MB. Free memory was 190.4 MB in the beginning and 176.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 21.49 ms. Allocated memory is still 207.6 MB. Free memory was 176.0 MB in the beginning and 174.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3793.65 ms. Allocated memory was 207.6 MB in the beginning and 265.3 MB in the end (delta: 57.7 MB). Free memory was 173.9 MB in the beginning and 184.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3723.3ms, OverallIterations: 8, TraceHistogramMax: 7, EmptinessCheckTime: 23.7ms, AutomataDifference: 669.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 249 SDtfs, 74 SDslu, 636 SDs, 0 SdLazy, 330 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 337.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 336.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 81.9ms AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 80.2ms SsaConstructionTime, 184.1ms SatisfiabilityAnalysisTime, 991.2ms InterpolantComputationTime, 251 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 SizeOfPredicates, 10 NumberOfNonLiveVariables, 781 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 186/200 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...