/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/ps2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 10:13:19,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 10:13:19,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 10:13:19,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 10:13:19,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 10:13:19,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 10:13:19,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 10:13:19,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 10:13:19,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 10:13:19,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 10:13:19,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 10:13:19,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 10:13:19,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 10:13:19,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 10:13:19,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 10:13:19,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 10:13:19,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 10:13:19,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 10:13:19,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 10:13:19,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 10:13:19,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 10:13:19,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 10:13:19,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 10:13:19,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 10:13:19,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 10:13:19,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 10:13:19,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 10:13:19,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 10:13:19,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 10:13:19,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 10:13:19,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 10:13:19,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 10:13:19,722 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 10:13:19,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 10:13:19,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 10:13:19,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 10:13:19,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 10:13:19,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 10:13:19,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 10:13:19,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 10:13:19,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 10:13:19,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 10:13:19,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 10:13:19,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 10:13:19,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 10:13:19,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 10:13:19,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 10:13:19,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 10:13:19,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 10:13:19,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 10:13:19,727 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 10:13:19,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 10:13:20,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 10:13:20,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 10:13:20,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 10:13:20,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 10:13:20,100 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 10:13:20,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c [2021-05-06 10:13:20,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694b486d8/ed9e7ce0960d4cf984940eb38285ef0b/FLAG72b9a47cf [2021-05-06 10:13:20,577 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 10:13:20,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c [2021-05-06 10:13:20,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694b486d8/ed9e7ce0960d4cf984940eb38285ef0b/FLAG72b9a47cf [2021-05-06 10:13:20,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694b486d8/ed9e7ce0960d4cf984940eb38285ef0b [2021-05-06 10:13:20,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 10:13:20,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 10:13:20,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 10:13:20,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 10:13:20,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 10:13:20,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b37aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20, skipping insertion in model container [2021-05-06 10:13:20,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 10:13:20,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 10:13:20,779 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/ps2-ll_unwindbound10.c[454,467] [2021-05-06 10:13:20,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:13:20,805 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 10:13:20,816 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/ps2-ll_unwindbound10.c[454,467] [2021-05-06 10:13:20,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:13:20,832 INFO L208 MainTranslator]: Completed translation [2021-05-06 10:13:20,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20 WrapperNode [2021-05-06 10:13:20,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 10:13:20,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 10:13:20,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 10:13:20,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 10:13:20,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (1/1) ... [2021-05-06 10:13:20,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 10:13:20,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 10:13:20,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 10:13:20,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 10:13:20,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (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 10:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 10:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 10:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 10:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 10:13:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 10:13:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 10:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 10:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 10:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 10:13:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 10:13:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 10:13:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 10:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 10:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 10:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 10:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 10:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 10:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 10:13:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 10:13:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 10:13:21,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 10:13:21,287 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 10:13:21,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:13:21 BoogieIcfgContainer [2021-05-06 10:13:21,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 10:13:21,309 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 10:13:21,309 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 10:13:21,310 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 10:13:21,312 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:13:21" (1/1) ... [2021-05-06 10:13:21,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:13:21 BasicIcfg [2021-05-06 10:13:21,323 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 10:13:21,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 10:13:21,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 10:13:21,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 10:13:21,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 10:13:20" (1/4) ... [2021-05-06 10:13:21,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1af91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:13:21, skipping insertion in model container [2021-05-06 10:13:21,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:20" (2/4) ... [2021-05-06 10:13:21,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1af91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:13:21, skipping insertion in model container [2021-05-06 10:13:21,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:13:21" (3/4) ... [2021-05-06 10:13:21,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1af91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:13:21, skipping insertion in model container [2021-05-06 10:13:21,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:13:21" (4/4) ... [2021-05-06 10:13:21,349 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound10.cJordan [2021-05-06 10:13:21,353 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 10:13:21,358 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 10:13:21,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 10:13:21,396 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 10:13:21,396 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 10:13:21,396 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 10:13:21,396 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 10:13:21,396 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 10:13:21,397 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 10:13:21,397 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 10:13:21,397 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 10:13:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 10:13:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 10:13:21,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:21,422 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:21,422 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2021-05-06 10:13:21,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:21,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002567368] [2021-05-06 10:13:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 10:13:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:21,664 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 10:13:21,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:21,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002567368] [2021-05-06 10:13:21,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002567368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:13:21,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:13:21,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 10:13:21,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043434231] [2021-05-06 10:13:21,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 10:13:21,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 10:13:21,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:13:21,686 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:21,738 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-06 10:13:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 10:13:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 10:13:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:21,746 INFO L225 Difference]: With dead ends: 23 [2021-05-06 10:13:21,747 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 10:13:21,749 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:13:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 10:13:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-06 10:13:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 10:13:21,778 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-06 10:13:21,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:21,779 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 10:13:21,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:21,779 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 10:13:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 10:13:21,780 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:21,780 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:21,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 10:13:21,781 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:21,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2021-05-06 10:13:21,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:21,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210379729] [2021-05-06 10:13:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:21,812 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:21,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688897887] [2021-05-06 10:13:21,812 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 10:13:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 10:13:21,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:21,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,042 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 10:13:22,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:22,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210379729] [2021-05-06 10:13:22,043 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:22,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688897887] [2021-05-06 10:13:22,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688897887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:13:22,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:13:22,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 10:13:22,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619059895] [2021-05-06 10:13:22,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 10:13:22,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 10:13:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 10:13:22,047 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:22,059 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 10:13:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 10:13:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 10:13:22,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:22,061 INFO L225 Difference]: With dead ends: 19 [2021-05-06 10:13:22,062 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 10:13:22,062 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 10:13:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 10:13:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-06 10:13:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-06 10:13:22,071 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-06 10:13:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:22,072 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-06 10:13:22,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-06 10:13:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 10:13:22,074 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:22,079 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:22,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 10:13:22,293 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2021-05-06 10:13:22,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:22,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221588780] [2021-05-06 10:13:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:22,303 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:22,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216207983] [2021-05-06 10:13:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:13:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:22,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:13:22,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:22,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,407 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 10:13:22,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:22,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221588780] [2021-05-06 10:13:22,408 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:22,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216207983] [2021-05-06 10:13:22,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216207983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:13:22,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:13:22,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 10:13:22,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168256330] [2021-05-06 10:13:22,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:13:22,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:22,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:13:22,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:13:22,409 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:22,433 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-06 10:13:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:13:22,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 10:13:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:22,435 INFO L225 Difference]: With dead ends: 26 [2021-05-06 10:13:22,435 INFO L226 Difference]: Without dead ends: 25 [2021-05-06 10:13:22,435 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-06 10:13:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-06 10:13:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-06 10:13:22,439 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2021-05-06 10:13:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:22,439 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-06 10:13:22,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-06 10:13:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-06 10:13:22,440 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:22,440 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:22,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:22,657 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:22,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2021-05-06 10:13:22,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:22,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171137702] [2021-05-06 10:13:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:22,666 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:22,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35711992] [2021-05-06 10:13:22,666 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 10:13:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:22,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:13:22,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:22,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:22,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:22,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171137702] [2021-05-06 10:13:22,783 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:22,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35711992] [2021-05-06 10:13:22,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35711992] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:22,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:22,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 10:13:22,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906088872] [2021-05-06 10:13:22,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:13:22,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:22,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:13:22,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:13:22,785 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:22,831 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-05-06 10:13:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:13:22,831 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), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-06 10:13:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:22,832 INFO L225 Difference]: With dead ends: 27 [2021-05-06 10:13:22,832 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 10:13:22,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 10:13:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 10:13:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-05-06 10:13:22,836 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-05-06 10:13:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:22,836 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-05-06 10:13:22,836 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), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-05-06 10:13:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-06 10:13:22,837 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:22,837 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:23,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:23,053 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2021-05-06 10:13:23,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:23,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063543890] [2021-05-06 10:13:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:23,062 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:23,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768512514] [2021-05-06 10:13:23,063 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 10:13:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:23,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 10:13:23,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:23,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:23,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:23,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063543890] [2021-05-06 10:13:23,183 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:23,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768512514] [2021-05-06 10:13:23,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768512514] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:23,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:23,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:13:23,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957011222] [2021-05-06 10:13:23,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:13:23,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:23,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:13:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:23,184 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:23,249 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-06 10:13:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:13:23,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-06 10:13:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:23,251 INFO L225 Difference]: With dead ends: 34 [2021-05-06 10:13:23,251 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 10:13:23,251 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:13:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 10:13:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-06 10:13:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 10:13:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-05-06 10:13:23,256 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2021-05-06 10:13:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:23,256 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-05-06 10:13:23,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-05-06 10:13:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 10:13:23,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:23,257 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:23,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:23,473 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash -870943837, now seen corresponding path program 2 times [2021-05-06 10:13:23,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:23,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606687578] [2021-05-06 10:13:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:23,483 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:23,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264957707] [2021-05-06 10:13:23,484 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 10:13:23,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 10:13:23,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:13:23,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 10:13:23,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:23,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:23,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:23,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606687578] [2021-05-06 10:13:23,662 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:23,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264957707] [2021-05-06 10:13:23,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264957707] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:23,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:23,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:13:23,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403094244] [2021-05-06 10:13:23,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:13:23,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:23,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:13:23,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:23,665 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:23,708 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-05-06 10:13:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 10:13:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-06 10:13:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:23,710 INFO L225 Difference]: With dead ends: 35 [2021-05-06 10:13:23,710 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 10:13:23,710 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 10:13:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 10:13:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-06 10:13:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 10:13:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-05-06 10:13:23,715 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2021-05-06 10:13:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:23,715 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-05-06 10:13:23,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-05-06 10:13:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 10:13:23,716 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:23,716 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:23,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-06 10:13:23,941 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash -869871361, now seen corresponding path program 2 times [2021-05-06 10:13:23,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:23,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925186769] [2021-05-06 10:13:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:23,950 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:23,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680806895] [2021-05-06 10:13:23,950 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 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 10:13:24,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 10:13:24,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:13:24,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 10:13:24,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 10:13:24,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:24,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925186769] [2021-05-06 10:13:24,098 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:24,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680806895] [2021-05-06 10:13:24,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680806895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:24,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:24,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 10:13:24,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331859413] [2021-05-06 10:13:24,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 10:13:24,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:24,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 10:13:24,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:13:24,099 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:24,149 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-06 10:13:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 10:13:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-06 10:13:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:24,152 INFO L225 Difference]: With dead ends: 42 [2021-05-06 10:13:24,152 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 10:13:24,153 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 10:13:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 10:13:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-06 10:13:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 10:13:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-05-06 10:13:24,158 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 28 [2021-05-06 10:13:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:24,158 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-05-06 10:13:24,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-05-06 10:13:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-06 10:13:24,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:24,159 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:24,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:24,365 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2080181988, now seen corresponding path program 3 times [2021-05-06 10:13:24,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:24,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833134645] [2021-05-06 10:13:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:24,371 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:24,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663622661] [2021-05-06 10:13:24,372 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 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 10:13:24,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-06 10:13:24,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:13:24,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 10:13:24,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 10:13:24,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:24,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833134645] [2021-05-06 10:13:24,551 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:24,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663622661] [2021-05-06 10:13:24,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663622661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:24,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:24,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 10:13:24,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568157057] [2021-05-06 10:13:24,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 10:13:24,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:24,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 10:13:24,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:13:24,552 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 10:13:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:24,579 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-05-06 10:13:24,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:13:24,579 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-05-06 10:13:24,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:24,580 INFO L225 Difference]: With dead ends: 39 [2021-05-06 10:13:24,580 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 10:13:24,580 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-06 10:13:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 10:13:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 10:13:24,580 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 10:13:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 10:13:24,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-06 10:13:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:24,581 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 10:13:24,581 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 10:13:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 10:13:24,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 10:13:24,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:24,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:13:24 BasicIcfg [2021-05-06 10:13:24,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 10:13:24,809 INFO L168 Benchmark]: Toolchain (without parser) took 4202.92 ms. Allocated memory was 196.1 MB in the beginning and 245.4 MB in the end (delta: 49.3 MB). Free memory was 162.1 MB in the beginning and 116.7 MB in the end (delta: 45.4 MB). Peak memory consumption was 95.5 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:24,809 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 196.1 MB. Free memory was 178.7 MB in the beginning and 178.6 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 10:13:24,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.78 ms. Allocated memory is still 196.1 MB. Free memory was 161.9 MB in the beginning and 152.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:24,809 INFO L168 Benchmark]: Boogie Preprocessor took 50.56 ms. Allocated memory is still 196.1 MB. Free memory was 152.3 MB in the beginning and 180.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:24,810 INFO L168 Benchmark]: RCFGBuilder took 402.12 ms. Allocated memory is still 196.1 MB. Free memory was 180.1 MB in the beginning and 166.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:24,810 INFO L168 Benchmark]: IcfgTransformer took 13.83 ms. Allocated memory is still 196.1 MB. Free memory was 166.0 MB in the beginning and 165.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:24,810 INFO L168 Benchmark]: TraceAbstraction took 3484.91 ms. Allocated memory was 196.1 MB in the beginning and 245.4 MB in the end (delta: 49.3 MB). Free memory was 164.6 MB in the beginning and 116.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 98.5 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:24,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 196.1 MB. Free memory was 178.7 MB in the beginning and 178.6 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 222.78 ms. Allocated memory is still 196.1 MB. Free memory was 161.9 MB in the beginning and 152.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.56 ms. Allocated memory is still 196.1 MB. Free memory was 152.3 MB in the beginning and 180.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 402.12 ms. Allocated memory is still 196.1 MB. Free memory was 180.1 MB in the beginning and 166.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 13.83 ms. Allocated memory is still 196.1 MB. Free memory was 166.0 MB in the beginning and 165.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3484.91 ms. Allocated memory was 196.1 MB in the beginning and 245.4 MB in the end (delta: 49.3 MB). Free memory was 164.6 MB in the beginning and 116.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 98.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3412.2ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 17.0ms, AutomataDifference: 362.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 146 SDtfs, 38 SDslu, 373 SDs, 0 SdLazy, 154 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 157.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 73.3ms SsaConstructionTime, 198.3ms SatisfiabilityAnalysisTime, 767.2ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 11 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 51/79 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...