/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/hard-u_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:57:04,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:57:04,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:57:04,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:57:04,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:57:04,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:57:04,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:57:04,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:57:04,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:57:04,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:57:04,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:57:04,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:57:04,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:57:04,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:57:04,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:57:04,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:57:04,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:57:04,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:57:04,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:57:04,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:57:04,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:57:04,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:57:04,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:57:04,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:57:04,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:57:04,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:57:04,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:57:04,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:57:04,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:57:04,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:57:04,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:57:04,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:57:04,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:57:04,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:57:04,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:57:04,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:57:04,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:57:04,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:57:04,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:57:04,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:57:04,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:57:04,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:57:04,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:57:04,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:57:04,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:57:04,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:57:04,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:57:04,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:57:04,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:57:04,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:57:04,493 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:57:04,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:57:04,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:57:04,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:57:04,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:57:04,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:57:04,748 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:57:04,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound5.c [2021-05-02 20:57:04,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7248c07/4419828e5f144dd4a2b7be203d90f3ac/FLAG77888b4de [2021-05-02 20:57:05,171 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:57:05,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound5.c [2021-05-02 20:57:05,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7248c07/4419828e5f144dd4a2b7be203d90f3ac/FLAG77888b4de [2021-05-02 20:57:05,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7248c07/4419828e5f144dd4a2b7be203d90f3ac [2021-05-02 20:57:05,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:57:05,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:57:05,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:57:05,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:57:05,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:57:05,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f40e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05, skipping insertion in model container [2021-05-02 20:57:05,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:57:05,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:57:05,329 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/hard-u_unwindbound5.c[545,558] [2021-05-02 20:57:05,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:57:05,353 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:57:05,362 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/hard-u_unwindbound5.c[545,558] [2021-05-02 20:57:05,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:57:05,396 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:57:05,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05 WrapperNode [2021-05-02 20:57:05,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:57:05,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:57:05,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:57:05,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:57:05,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:57:05,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:57:05,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:57:05,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:57:05,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (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 [2021-05-02 20:57:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:57:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:57:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:57:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:57:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:57:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:57:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:57:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:57:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:57:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:57:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:57:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:57:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:57:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:57:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:57:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:57:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:57:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:57:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:57:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:57:05,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:57:05,767 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:57:05,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:57:05 BoogieIcfgContainer [2021-05-02 20:57:05,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:57:05,769 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:57:05,769 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:57:05,770 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:57:05,771 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:57:05" (1/1) ... [2021-05-02 20:57:05,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:57:05 BasicIcfg [2021-05-02 20:57:05,782 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:57:05,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:57:05,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:57:05,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:57:05,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:57:05" (1/4) ... [2021-05-02 20:57:05,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d421eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:57:05, skipping insertion in model container [2021-05-02 20:57:05,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:05" (2/4) ... [2021-05-02 20:57:05,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d421eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:57:05, skipping insertion in model container [2021-05-02 20:57:05,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:57:05" (3/4) ... [2021-05-02 20:57:05,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d421eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:57:05, skipping insertion in model container [2021-05-02 20:57:05,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:57:05" (4/4) ... [2021-05-02 20:57:05,787 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound5.cJordan [2021-05-02 20:57:05,790 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:57:05,793 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:57:05,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:57:05,827 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:57:05,828 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:57:05,828 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:57:05,828 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:57:05,828 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:57:05,828 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:57:05,828 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:57:05,828 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:57:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:57:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:57:05,846 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:05,847 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:05,847 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:05,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:05,851 INFO L82 PathProgramCache]: Analyzing trace with hash 79654685, now seen corresponding path program 1 times [2021-05-02 20:57:05,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:05,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339756814] [2021-05-02 20:57:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:57:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:57:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:06,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:06,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339756814] [2021-05-02 20:57:06,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339756814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:06,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:06,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:57:06,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481423821] [2021-05-02 20:57:06,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:57:06,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:57:06,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:57:06,066 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-05-02 20:57:06,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:06,222 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-02 20:57:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:57:06,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 18 [2021-05-02 20:57:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:06,228 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:57:06,228 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 20:57:06,229 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:57:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 20:57:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-02 20:57:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-05-02 20:57:06,250 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2021-05-02 20:57:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:06,251 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-05-02 20:57:06,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-05-02 20:57:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-05-02 20:57:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:57:06,251 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:06,251 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:06,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:57:06,252 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash -85369733, now seen corresponding path program 1 times [2021-05-02 20:57:06,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:06,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958114517] [2021-05-02 20:57:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:57:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:57:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:06,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:06,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958114517] [2021-05-02 20:57:06,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958114517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:06,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:06,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:57:06,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947243799] [2021-05-02 20:57:06,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:06,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:06,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:06,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:06,392 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-05-02 20:57:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:06,609 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-05-02 20:57:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 18 [2021-05-02 20:57:06,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:06,612 INFO L225 Difference]: With dead ends: 45 [2021-05-02 20:57:06,612 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 20:57:06,613 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:57:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 20:57:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-05-02 20:57:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-05-02 20:57:06,631 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 18 [2021-05-02 20:57:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:06,631 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-05-02 20:57:06,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-05-02 20:57:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-05-02 20:57:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 20:57:06,633 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:06,633 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:06,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 20:57:06,636 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1527809342, now seen corresponding path program 1 times [2021-05-02 20:57:06,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:06,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907076951] [2021-05-02 20:57:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:06,651 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:06,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261943601] [2021-05-02 20:57:06,651 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 [2021-05-02 20:57:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:06,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:57:06,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:06,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:06,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:06,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:06,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:06,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:06,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:06,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907076951] [2021-05-02 20:57:06,806 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:06,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261943601] [2021-05-02 20:57:06,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261943601] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:06,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:06,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 20:57:06,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49397295] [2021-05-02 20:57:06,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 20:57:06,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:06,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 20:57:06,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:57:06,807 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:57:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:06,815 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-05-02 20:57:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 20:57:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 20:57:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:06,816 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:57:06,816 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 20:57:06,816 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:57:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 20:57:06,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 20:57:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-05-02 20:57:06,819 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 20 [2021-05-02 20:57:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:06,819 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-05-02 20:57:06,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:57:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-05-02 20:57:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 20:57:06,820 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:06,820 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, 1] [2021-05-02 20:57:07,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 20:57:07,037 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:07,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2128444854, now seen corresponding path program 1 times [2021-05-02 20:57:07,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:07,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722528658] [2021-05-02 20:57:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:57:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:57:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-02 20:57:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:07,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:07,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722528658] [2021-05-02 20:57:07,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722528658] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:07,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:07,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:57:07,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197114199] [2021-05-02 20:57:07,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:07,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:07,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:07,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:07,161 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:57:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:07,385 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-05-02 20:57:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:07,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 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 23 [2021-05-02 20:57:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:07,387 INFO L225 Difference]: With dead ends: 50 [2021-05-02 20:57:07,387 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 20:57:07,388 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:57:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 20:57:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-05-02 20:57:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 20:57:07,393 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 23 [2021-05-02 20:57:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:07,393 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 20:57:07,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:57:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 20:57:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:57:07,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:07,394 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, 1] [2021-05-02 20:57:07,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 20:57:07,394 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:07,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:07,395 INFO L82 PathProgramCache]: Analyzing trace with hash 135546551, now seen corresponding path program 1 times [2021-05-02 20:57:07,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:07,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365263959] [2021-05-02 20:57:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:07,410 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:07,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209056496] [2021-05-02 20:57:07,411 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 [2021-05-02 20:57:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:07,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:57:07,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:07,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:07,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:07,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:07,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:07,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:57:07,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:07,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365263959] [2021-05-02 20:57:07,589 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:07,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209056496] [2021-05-02 20:57:07,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209056496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:07,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:07,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 20:57:07,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81208449] [2021-05-02 20:57:07,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:57:07,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:57:07,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:57:07,591 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:57:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:07,685 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-05-02 20:57:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-02 20:57:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:07,689 INFO L225 Difference]: With dead ends: 57 [2021-05-02 20:57:07,689 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 20:57:07,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:57:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 20:57:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 20:57:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:57:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2021-05-02 20:57:07,700 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 28 [2021-05-02 20:57:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:07,701 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2021-05-02 20:57:07,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:57:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2021-05-02 20:57:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:57:07,702 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:07,702 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:07,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:07,918 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:07,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1016025214, now seen corresponding path program 1 times [2021-05-02 20:57:07,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:07,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176042499] [2021-05-02 20:57:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:07,925 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:07,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049476721] [2021-05-02 20:57:07,926 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 [2021-05-02 20:57:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:07,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:57:07,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:07,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:57:08,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:08,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176042499] [2021-05-02 20:57:08,077 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:08,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049476721] [2021-05-02 20:57:08,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049476721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:08,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:08,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:57:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935692370] [2021-05-02 20:57:08,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:57:08,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:08,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:57:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:57:08,079 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:08,103 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-05-02 20:57:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:57:08,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 20:57:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:08,104 INFO L225 Difference]: With dead ends: 69 [2021-05-02 20:57:08,104 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 20:57:08,104 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:57:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 20:57:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 20:57:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:57:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-05-02 20:57:08,107 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 36 [2021-05-02 20:57:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:08,107 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-05-02 20:57:08,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-05-02 20:57:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:57:08,108 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:08,108 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:08,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:08,315 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:08,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1017127481, now seen corresponding path program 1 times [2021-05-02 20:57:08,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:08,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436110641] [2021-05-02 20:57:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:08,322 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:08,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597042595] [2021-05-02 20:57:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:08,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:57:08,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:08,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:57:08,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:08,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436110641] [2021-05-02 20:57:08,529 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:08,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597042595] [2021-05-02 20:57:08,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597042595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:08,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:08,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 20:57:08,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386473060] [2021-05-02 20:57:08,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:57:08,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:57:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:57:08,532 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:57:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:08,657 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-05-02 20:57:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:57:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-05-02 20:57:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:08,659 INFO L225 Difference]: With dead ends: 72 [2021-05-02 20:57:08,659 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 20:57:08,659 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:57:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 20:57:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 20:57:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:57:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2021-05-02 20:57:08,662 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 36 [2021-05-02 20:57:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:08,662 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2021-05-02 20:57:08,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:57:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2021-05-02 20:57:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 20:57:08,663 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:08,663 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:08,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:08,877 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:08,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1880362404, now seen corresponding path program 1 times [2021-05-02 20:57:08,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:08,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421124746] [2021-05-02 20:57:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:08,884 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:08,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688411540] [2021-05-02 20:57:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:08,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:57:08,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:08,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:08,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:57:09,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:09,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421124746] [2021-05-02 20:57:09,011 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:09,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688411540] [2021-05-02 20:57:09,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688411540] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:09,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:09,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 20:57:09,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701967267] [2021-05-02 20:57:09,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:57:09,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:57:09,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:57:09,012 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:09,039 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-05-02 20:57:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:57:09,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-05-02 20:57:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:09,040 INFO L225 Difference]: With dead ends: 60 [2021-05-02 20:57:09,040 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 20:57:09,041 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 20:57:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 20:57:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:57:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2021-05-02 20:57:09,043 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 38 [2021-05-02 20:57:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:09,044 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2021-05-02 20:57:09,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2021-05-02 20:57:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 20:57:09,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:09,044 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:09,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:09,259 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1525733273, now seen corresponding path program 1 times [2021-05-02 20:57:09,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:09,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789454498] [2021-05-02 20:57:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:09,270 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:09,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048660284] [2021-05-02 20:57:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:57:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:09,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-02 20:57:09,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:09,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789454498] [2021-05-02 20:57:09,585 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:09,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048660284] [2021-05-02 20:57:09,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048660284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:09,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:09,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:57:09,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432354288] [2021-05-02 20:57:09,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:57:09,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:09,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:57:09,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:57:09,587 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-02 20:57:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:09,739 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2021-05-02 20:57:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:57:09,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2021-05-02 20:57:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:09,740 INFO L225 Difference]: With dead ends: 75 [2021-05-02 20:57:09,740 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 20:57:09,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:57:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 20:57:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-05-02 20:57:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 46 states have internal predecessors, (53), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 20:57:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2021-05-02 20:57:09,744 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 46 [2021-05-02 20:57:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:09,744 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2021-05-02 20:57:09,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-02 20:57:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2021-05-02 20:57:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:57:09,745 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:09,745 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:09,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:09,948 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:09,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1447419744, now seen corresponding path program 1 times [2021-05-02 20:57:09,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:09,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529541704] [2021-05-02 20:57:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:09,966 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:09,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708093844] [2021-05-02 20:57:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:57:10,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:57:10,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:10,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529541704] [2021-05-02 20:57:10,143 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:10,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708093844] [2021-05-02 20:57:10,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708093844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:10,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:10,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:57:10,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417912938] [2021-05-02 20:57:10,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:10,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:10,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:10,145 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:57:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:10,177 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-05-02 20:57:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:57:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2021-05-02 20:57:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:10,178 INFO L225 Difference]: With dead ends: 86 [2021-05-02 20:57:10,178 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 20:57:10,178 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 20:57:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-05-02 20:57:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 55 states have internal predecessors, (61), 18 states have call successors, (18), 13 states have call predecessors, (18), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 20:57:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-05-02 20:57:10,182 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 54 [2021-05-02 20:57:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:10,182 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-05-02 20:57:10,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:57:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-05-02 20:57:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:57:10,183 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:10,183 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:10,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 20:57:10,397 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:10,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1448522011, now seen corresponding path program 1 times [2021-05-02 20:57:10,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:10,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798952156] [2021-05-02 20:57:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:10,403 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:10,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530141676] [2021-05-02 20:57:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:57:10,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:10,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 20:57:10,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:10,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798952156] [2021-05-02 20:57:10,664 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:10,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530141676] [2021-05-02 20:57:10,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530141676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:10,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:10,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:57:10,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403353241] [2021-05-02 20:57:10,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:57:10,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:57:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:57:10,665 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 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) [2021-05-02 20:57:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:12,832 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-05-02 20:57:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:57:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 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 54 [2021-05-02 20:57:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:12,834 INFO L225 Difference]: With dead ends: 97 [2021-05-02 20:57:12,834 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 20:57:12,834 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:57:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 20:57:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-02 20:57:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 63 states have internal predecessors, (71), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:57:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-05-02 20:57:12,837 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 54 [2021-05-02 20:57:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:12,838 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-05-02 20:57:12,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 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) [2021-05-02 20:57:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-05-02 20:57:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 20:57:12,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:12,839 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:13,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 20:57:13,041 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:13,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1294763379, now seen corresponding path program 1 times [2021-05-02 20:57:13,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:13,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738361879] [2021-05-02 20:57:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:13,047 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:13,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702984281] [2021-05-02 20:57:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:13,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:57:13,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:13,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 36 proven. 46 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 20:57:13,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:13,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738361879] [2021-05-02 20:57:13,194 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:13,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702984281] [2021-05-02 20:57:13,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702984281] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:13,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:13,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:57:13,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132004780] [2021-05-02 20:57:13,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:13,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:13,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:13,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:13,195 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:57:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:13,242 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-05-02 20:57:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 61 [2021-05-02 20:57:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:13,244 INFO L225 Difference]: With dead ends: 98 [2021-05-02 20:57:13,245 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 20:57:13,245 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:57:13,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 20:57:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 20:57:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 65 states have internal predecessors, (73), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:57:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2021-05-02 20:57:13,251 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 61 [2021-05-02 20:57:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:13,251 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2021-05-02 20:57:13,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:57:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2021-05-02 20:57:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 20:57:13,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:13,254 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:13,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,469 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:13,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1774996485, now seen corresponding path program 2 times [2021-05-02 20:57:13,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:13,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590801880] [2021-05-02 20:57:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:13,475 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:13,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394887032] [2021-05-02 20:57:13,475 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:57:13,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:57:13,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 20:57:13,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:13,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 43 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-05-02 20:57:14,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:14,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590801880] [2021-05-02 20:57:14,033 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:14,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394887032] [2021-05-02 20:57:14,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394887032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:14,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:14,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:57:14,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975395013] [2021-05-02 20:57:14,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:57:14,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:14,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:57:14,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:57:14,035 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 20:57:14,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:14,404 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2021-05-02 20:57:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:57:14,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2021-05-02 20:57:14,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:14,405 INFO L225 Difference]: With dead ends: 113 [2021-05-02 20:57:14,405 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 20:57:14,406 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:57:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 20:57:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2021-05-02 20:57:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 69 states have (on average 1.173913043478261) internal successors, (81), 72 states have internal predecessors, (81), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 20:57:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2021-05-02 20:57:14,409 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 64 [2021-05-02 20:57:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:14,409 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2021-05-02 20:57:14,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 20:57:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2021-05-02 20:57:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 20:57:14,410 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:14,410 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:14,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:14,611 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash 112143503, now seen corresponding path program 1 times [2021-05-02 20:57:14,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:14,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312822026] [2021-05-02 20:57:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:14,617 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:14,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975388640] [2021-05-02 20:57:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:14,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 20:57:14,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:14,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-05-02 20:57:14,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:14,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312822026] [2021-05-02 20:57:14,775 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:14,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975388640] [2021-05-02 20:57:14,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975388640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:14,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:14,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:57:14,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430924146] [2021-05-02 20:57:14,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:57:14,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:14,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:57:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:57:14,776 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:57:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:14,863 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2021-05-02 20:57:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:14,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-05-02 20:57:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:14,865 INFO L225 Difference]: With dead ends: 133 [2021-05-02 20:57:14,865 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 20:57:14,866 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:57:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 20:57:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-02 20:57:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 89 states have internal predecessors, (99), 26 states have call successors, (26), 19 states have call predecessors, (26), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 20:57:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2021-05-02 20:57:14,871 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 68 [2021-05-02 20:57:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:14,871 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2021-05-02 20:57:14,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:57:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2021-05-02 20:57:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 20:57:14,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:14,872 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:15,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 20:57:15,088 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash 113245770, now seen corresponding path program 1 times [2021-05-02 20:57:15,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:15,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721967714] [2021-05-02 20:57:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:15,093 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:15,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292418241] [2021-05-02 20:57:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 20:57:15,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:15,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:07:39,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:07:39,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721967714] [2021-05-02 21:07:39,633 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:07:39,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292418241] [2021-05-02 21:07:39,633 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-02 21:07:39,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 21:07:39,842 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NegativeArraySizeException: -1072721305 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:615) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:612) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-02 21:07:39,847 INFO L168 Benchmark]: Toolchain (without parser) took 634650.91 ms. Allocated memory was 204.5 MB in the beginning and 6.4 GB in the end (delta: 6.2 GB). Free memory was 170.3 MB in the beginning and 4.4 GB in the end (delta: -4.2 GB). Peak memory consumption was 4.7 GB. Max. memory is 8.0 GB. [2021-05-02 21:07:39,847 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 187.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 21:07:39,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.54 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 188.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:39,847 INFO L168 Benchmark]: Boogie Preprocessor took 48.03 ms. Allocated memory is still 204.5 MB. Free memory was 188.7 MB in the beginning and 187.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:39,847 INFO L168 Benchmark]: RCFGBuilder took 317.55 ms. Allocated memory is still 204.5 MB. Free memory was 187.1 MB in the beginning and 171.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:39,847 INFO L168 Benchmark]: IcfgTransformer took 13.58 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 169.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:39,847 INFO L168 Benchmark]: TraceAbstraction took 634062.82 ms. Allocated memory was 204.5 MB in the beginning and 6.4 GB in the end (delta: 6.2 GB). Free memory was 168.9 MB in the beginning and 4.4 GB in the end (delta: -4.2 GB). Peak memory consumption was 4.7 GB. Max. memory is 8.0 GB. [2021-05-02 21:07:40,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 187.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 197.54 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 188.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.03 ms. Allocated memory is still 204.5 MB. Free memory was 188.7 MB in the beginning and 187.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 317.55 ms. Allocated memory is still 204.5 MB. Free memory was 187.1 MB in the beginning and 171.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 13.58 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 169.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 634062.82 ms. Allocated memory was 204.5 MB in the beginning and 6.4 GB in the end (delta: 6.2 GB). Free memory was 168.9 MB in the beginning and 4.4 GB in the end (delta: -4.2 GB). Peak memory consumption was 4.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NegativeArraySizeException: -1072721305 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NegativeArraySizeException: -1072721305: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...