/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/divbin_valuebound50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:16:02,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:16:02,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:16:02,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:16:02,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:16:02,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:16:02,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:16:02,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:16:02,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:16:02,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:16:02,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:16:02,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:16:02,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:16:02,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:16:02,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:16:02,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:16:02,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:16:02,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:16:02,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:16:02,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:16:02,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:16:02,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:16:02,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:16:02,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:16:02,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:16:02,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:16:02,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:16:02,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:16:02,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:16:02,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:16:02,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:16:02,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:16:02,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:16:02,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:16:02,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:16:02,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:16:02,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:16:02,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:16:02,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:16:02,257 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:16:02,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:16:02,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:16:02,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:16:02,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:16:02,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:16:02,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:16:02,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:16:02,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:16:02,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:16:02,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:16:02,260 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:16:02,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:16:02,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:16:02,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:16:02,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:16:02,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:16:02,697 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:16:02,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i [2021-05-02 20:16:02,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04d22d48/740ef5e598964ea9be8fce6c967d5c99/FLAG4f168ed05 [2021-05-02 20:16:03,296 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:16:03,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i [2021-05-02 20:16:03,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04d22d48/740ef5e598964ea9be8fce6c967d5c99/FLAG4f168ed05 [2021-05-02 20:16:03,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04d22d48/740ef5e598964ea9be8fce6c967d5c99 [2021-05-02 20:16:03,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:16:03,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:16:03,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:16:03,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:16:03,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:16:03,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:16:03" (1/1) ... [2021-05-02 20:16:03,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608dc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:03, skipping insertion in model container [2021-05-02 20:16:03,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:16:03" (1/1) ... [2021-05-02 20:16:03,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:16:03,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:16:03,938 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/divbin_valuebound50.i[958,971] [2021-05-02 20:16:03,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:16:03,999 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:16:04,041 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/divbin_valuebound50.i[958,971] [2021-05-02 20:16:04,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:16:04,114 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:16:04,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04 WrapperNode [2021-05-02 20:16:04,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:16:04,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:16:04,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:16:04,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:16:04,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:16:04,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:16:04,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:16:04,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:16:04,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (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 20:16:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:16:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:16:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:16:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:16:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:16:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:16:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:16:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:16:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 20:16:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:16:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:16:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:16:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:16:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:16:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:16:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:16:04,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:16:04,646 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:16:04,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:16:04 BoogieIcfgContainer [2021-05-02 20:16:04,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:16:04,648 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:16:04,648 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:16:04,649 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:16:04,651 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:16:04" (1/1) ... [2021-05-02 20:16:04,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:16:04 BasicIcfg [2021-05-02 20:16:04,678 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:16:04,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:16:04,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:16:04,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:16:04,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:16:03" (1/4) ... [2021-05-02 20:16:04,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69da1a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:16:04, skipping insertion in model container [2021-05-02 20:16:04,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:16:04" (2/4) ... [2021-05-02 20:16:04,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69da1a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:16:04, skipping insertion in model container [2021-05-02 20:16:04,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:16:04" (3/4) ... [2021-05-02 20:16:04,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69da1a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:16:04, skipping insertion in model container [2021-05-02 20:16:04,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:16:04" (4/4) ... [2021-05-02 20:16:04,687 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound50.iJordan [2021-05-02 20:16:04,691 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:16:04,697 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:16:04,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:16:04,734 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:16:04,734 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:16:04,735 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:16:04,735 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:16:04,735 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:16:04,735 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:16:04,735 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:16:04,736 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:16:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:16:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 20:16:04,753 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:04,754 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 20:16:04,754 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:04,758 INFO L82 PathProgramCache]: Analyzing trace with hash -402483300, now seen corresponding path program 1 times [2021-05-02 20:16:04,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:04,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379126605] [2021-05-02 20:16:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:16:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:16:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:16:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:16:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:16:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:16:05,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:16:05,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379126605] [2021-05-02 20:16:05,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379126605] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:16:05,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:16:05,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:16:05,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120659294] [2021-05-02 20:16:05,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:16:05,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:16:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:16:05,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:16:05,122 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:16:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:16:05,222 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-05-02 20:16:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:16:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-05-02 20:16:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:16:05,230 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:16:05,230 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 20:16:05,238 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:16:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 20:16:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 20:16:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:16:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 20:16:05,285 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2021-05-02 20:16:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:16:05,285 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 20:16:05,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:16:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 20:16:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 20:16:05,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:05,287 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 20:16:05,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:16:05,287 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1131459816, now seen corresponding path program 1 times [2021-05-02 20:16:05,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:05,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698838243] [2021-05-02 20:16:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:05,358 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:16:05,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625834969] [2021-05-02 20:16:05,358 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 20:16:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:05,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:16:05,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:16:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:16:05,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:16:05,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698838243] [2021-05-02 20:16:05,987 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:16:05,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625834969] [2021-05-02 20:16:05,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625834969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:16:05,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:16:05,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:16:05,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598469933] [2021-05-02 20:16:05,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:16:05,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:16:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:16:05,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:16:05,990 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:16:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:16:06,198 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-02 20:16:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:16:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2021-05-02 20:16:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:16:06,200 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:16:06,200 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 20:16:06,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 232.1ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:16:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 20:16:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 20:16:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:16:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-05-02 20:16:06,229 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 35 [2021-05-02 20:16:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:16:06,230 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-05-02 20:16:06,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:16:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-05-02 20:16:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 20:16:06,232 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:06,232 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 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 20:16:06,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:16:06,445 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash -305154333, now seen corresponding path program 1 times [2021-05-02 20:16:06,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:06,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707156229] [2021-05-02 20:16:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:06,487 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:16:06,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436644095] [2021-05-02 20:16:06,487 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 20:16:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:06,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:16:06,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:16:06,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:06,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:07,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:16:07,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:16:07,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707156229] [2021-05-02 20:16:07,096 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:16:07,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436644095] [2021-05-02 20:16:07,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436644095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:16:07,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:16:07,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:16:07,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333229146] [2021-05-02 20:16:07,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:16:07,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:16:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:16:07,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:16:07,100 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 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 20:16:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:16:07,341 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-05-02 20:16:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:16:07,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 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 37 [2021-05-02 20:16:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:16:07,343 INFO L225 Difference]: With dead ends: 55 [2021-05-02 20:16:07,343 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 20:16:07,344 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 179.8ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:16:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 20:16:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-05-02 20:16:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:16:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-05-02 20:16:07,349 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 37 [2021-05-02 20:16:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:16:07,350 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-05-02 20:16:07,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 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 20:16:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-05-02 20:16:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 20:16:07,351 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:07,351 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 20:16:07,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:16:07,568 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1858557484, now seen corresponding path program 1 times [2021-05-02 20:16:07,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:07,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895024356] [2021-05-02 20:16:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:07,586 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:16:07,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192160638] [2021-05-02 20:16:07,587 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 20:16:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:07,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 20:16:07,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:16:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:16:08,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:16:08,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895024356] [2021-05-02 20:16:08,001 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:16:08,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192160638] [2021-05-02 20:16:08,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192160638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:16:08,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:16:08,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:16:08,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520193065] [2021-05-02 20:16:08,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:16:08,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:16:08,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:16:08,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:16:08,003 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:16:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:16:08,077 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2021-05-02 20:16:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:16:08,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2021-05-02 20:16:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:16:08,078 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:16:08,079 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 20:16:08,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:16:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 20:16:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 20:16:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:16:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 20:16:08,084 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 43 [2021-05-02 20:16:08,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:16:08,084 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 20:16:08,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:16:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 20:16:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 20:16:08,086 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:08,086 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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 20:16:08,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:16:08,297 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash 270500047, now seen corresponding path program 1 times [2021-05-02 20:16:08,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:08,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464551398] [2021-05-02 20:16:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:08,309 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:16:08,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855742662] [2021-05-02 20:16:08,309 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 20:16:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:16:08,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 20:16:08,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:16:08,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:09,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:10,003 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 31 [2021-05-02 20:16:10,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:16:10,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:16:10,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464551398] [2021-05-02 20:16:10,269 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:16:10,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855742662] [2021-05-02 20:16:10,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855742662] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:16:10,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:16:10,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:16:10,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816201726] [2021-05-02 20:16:10,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:16:10,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:16:10,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:16:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:16:10,273 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 20:16:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:16:10,789 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-05-02 20:16:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:16:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2021-05-02 20:16:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:16:10,791 INFO L225 Difference]: With dead ends: 47 [2021-05-02 20:16:10,791 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 20:16:10,791 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 888.5ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-05-02 20:16:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 20:16:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 20:16:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 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 20:16:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-05-02 20:16:10,796 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 45 [2021-05-02 20:16:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:16:10,796 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-05-02 20:16:10,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 20:16:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-05-02 20:16:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 20:16:10,797 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:10,797 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 20:16:11,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:16:11,002 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:11,003 INFO L82 PathProgramCache]: Analyzing trace with hash -575889733, now seen corresponding path program 2 times [2021-05-02 20:16:11,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:11,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817891791] [2021-05-02 20:16:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:11,013 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:16:11,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464910134] [2021-05-02 20:16:11,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:16:11,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:16:11,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:16:11,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 20:16:11,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:16:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:11,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:12,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:13,395 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 172 DAG size of output: 29 [2021-05-02 20:16:13,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-05-02 20:16:14,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:16:14,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817891791] [2021-05-02 20:16:14,404 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:16:14,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464910134] [2021-05-02 20:16:14,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464910134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:16:14,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:16:14,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:16:14,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796520297] [2021-05-02 20:16:14,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:16:14,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:16:14,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:16:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:16:14,406 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-05-02 20:16:17,263 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-05-02 20:16:17,571 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-05-02 20:16:17,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:16:17,650 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-05-02 20:16:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:16:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-05-02 20:16:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:16:17,652 INFO L225 Difference]: With dead ends: 57 [2021-05-02 20:16:17,652 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 20:16:17,653 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2305.1ms TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-05-02 20:16:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 20:16:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-05-02 20:16:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 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 20:16:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-05-02 20:16:17,660 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 53 [2021-05-02 20:16:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:16:17,661 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-05-02 20:16:17,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-05-02 20:16:17,661 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-05-02 20:16:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 20:16:17,662 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:16:17,662 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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 20:16:17,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:16:17,866 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:16:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:16:17,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1631897610, now seen corresponding path program 3 times [2021-05-02 20:16:17,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:16:17,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541656160] [2021-05-02 20:16:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:16:17,878 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:16:17,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556068030] [2021-05-02 20:16:17,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:16:34,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:16:34,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:16:34,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 20:16:34,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:16:34,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:34,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:34,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:34,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:34,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:34,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:34,930 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-02 20:16:35,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:35,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:35,773 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-05-02 20:16:36,683 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-05-02 20:16:36,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:40,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:40,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:40,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:41,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:41,195 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 551 DAG size of output: 555 [2021-05-02 20:16:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:16:41,497 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 571 [2021-05-02 20:16:41,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:20:53,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:20:53,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541656160] [2021-05-02 20:20:53,669 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:20:53,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556068030] [2021-05-02 20:20:53,669 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-02 20:20:53,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:20:53,870 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NegativeArraySizeException: -978752248 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$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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 20:20:53,873 INFO L168 Benchmark]: Toolchain (without parser) took 290123.03 ms. Allocated memory was 213.9 MB in the beginning and 8.0 GB in the end (delta: 7.7 GB). Free memory was 178.0 MB in the beginning and 6.6 GB in the end (delta: -6.5 GB). Peak memory consumption was 5.9 GB. Max. memory is 8.0 GB. [2021-05-02 20:20:53,873 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 213.9 MB. Free memory is still 194.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:20:53,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.33 ms. Allocated memory is still 213.9 MB. Free memory was 177.8 MB in the beginning and 197.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. [2021-05-02 20:20:53,873 INFO L168 Benchmark]: Boogie Preprocessor took 71.92 ms. Allocated memory is still 213.9 MB. Free memory was 196.8 MB in the beginning and 195.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 20:20:53,873 INFO L168 Benchmark]: RCFGBuilder took 459.40 ms. Allocated memory is still 213.9 MB. Free memory was 195.2 MB in the beginning and 178.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:20:53,874 INFO L168 Benchmark]: IcfgTransformer took 29.88 ms. Allocated memory is still 213.9 MB. Free memory was 178.9 MB in the beginning and 177.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 20:20:53,874 INFO L168 Benchmark]: TraceAbstraction took 289192.47 ms. Allocated memory was 213.9 MB in the beginning and 8.0 GB in the end (delta: 7.7 GB). Free memory was 177.4 MB in the beginning and 6.6 GB in the end (delta: -6.5 GB). Peak memory consumption was 5.9 GB. Max. memory is 8.0 GB. [2021-05-02 20:20:53,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 213.9 MB. Free memory is still 194.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.33 ms. Allocated memory is still 213.9 MB. Free memory was 177.8 MB in the beginning and 197.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.92 ms. Allocated memory is still 213.9 MB. Free memory was 196.8 MB in the beginning and 195.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 459.40 ms. Allocated memory is still 213.9 MB. Free memory was 195.2 MB in the beginning and 178.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 29.88 ms. Allocated memory is still 213.9 MB. Free memory was 178.9 MB in the beginning and 177.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 289192.47 ms. Allocated memory was 213.9 MB in the beginning and 8.0 GB in the end (delta: 7.7 GB). Free memory was 177.4 MB in the beginning and 6.6 GB in the end (delta: -6.5 GB). Peak memory consumption was 5.9 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NegativeArraySizeException: -978752248 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NegativeArraySizeException: -978752248: 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...