/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_valuebound10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:13:45,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:13:45,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:13:45,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:13:45,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:13:45,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:13:45,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:13:45,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:13:45,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:13:45,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:13:45,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:13:45,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:13:45,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:13:45,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:13:45,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:13:45,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:13:45,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:13:45,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:13:45,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:13:45,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:13:45,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:13:45,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:13:45,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:13:45,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:13:45,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:13:45,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:13:45,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:13:45,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:13:45,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:13:45,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:13:45,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:13:45,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:13:45,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:13:45,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:13:45,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:13:45,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:13:45,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:13:45,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:13:45,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:13:45,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:13:45,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:13:45,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:13:45,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:13:45,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:13:45,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:13:45,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:13:45,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:13:45,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:13:45,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:13:45,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:13:45,274 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:13:45,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:13:45,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:13:45,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:13:45,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:13:45,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:13:45,727 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:13:45,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound10.i [2021-05-02 20:13:45,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46beb26e8/7a26a7b0313e4adeacd893f3ced41ae0/FLAGcaf24f26a [2021-05-02 20:13:46,247 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:13:46,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound10.i [2021-05-02 20:13:46,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46beb26e8/7a26a7b0313e4adeacd893f3ced41ae0/FLAGcaf24f26a [2021-05-02 20:13:46,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46beb26e8/7a26a7b0313e4adeacd893f3ced41ae0 [2021-05-02 20:13:46,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:13:46,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:13:46,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:13:46,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:13:46,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:13:46,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d86427a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46, skipping insertion in model container [2021-05-02 20:13:46,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:13:46,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:13:46,870 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_valuebound10.i[958,971] [2021-05-02 20:13:46,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:13:46,884 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:13:46,939 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_valuebound10.i[958,971] [2021-05-02 20:13:46,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:13:46,959 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:13:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46 WrapperNode [2021-05-02 20:13:46,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:13:46,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:13:46,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:13:46,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:13:46,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (1/1) ... [2021-05-02 20:13:46,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:13:46,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:13:46,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:13:46,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:13:46,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (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 20:13:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:13:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:13:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:13:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:13:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:13:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:13:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:13:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:13:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:13:47,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:13:47,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:13:47,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:13:47,335 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:13:47,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:13:47 BoogieIcfgContainer [2021-05-02 20:13:47,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:13:47,337 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:13:47,337 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:13:47,337 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:13:47,339 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:13:47" (1/1) ... [2021-05-02 20:13:47,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:13:47 BasicIcfg [2021-05-02 20:13:47,368 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:13:47,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:13:47,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:13:47,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:13:47,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:13:46" (1/4) ... [2021-05-02 20:13:47,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23074319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:13:47, skipping insertion in model container [2021-05-02 20:13:47,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:13:46" (2/4) ... [2021-05-02 20:13:47,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23074319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:13:47, skipping insertion in model container [2021-05-02 20:13:47,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:13:47" (3/4) ... [2021-05-02 20:13:47,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23074319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:13:47, skipping insertion in model container [2021-05-02 20:13:47,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:13:47" (4/4) ... [2021-05-02 20:13:47,390 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound10.iJordan [2021-05-02 20:13:47,394 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:13:47,397 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:13:47,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:13:47,454 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:13:47,454 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:13:47,455 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:13:47,455 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:13:47,455 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:13:47,455 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:13:47,455 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:13:47,455 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:13:47,464 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 20:13:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 20:13:47,469 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:47,470 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 20:13:47,470 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash -402483300, now seen corresponding path program 1 times [2021-05-02 20:13:47,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:47,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098949470] [2021-05-02 20:13:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:13:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:13:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:13:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:13:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:13:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,620 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 20:13:47,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:13:47,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098949470] [2021-05-02 20:13:47,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098949470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:13:47,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:13:47,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:13:47,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971541630] [2021-05-02 20:13:47,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:13:47,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:13:47,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:13:47,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:13:47,636 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 20:13:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:13:47,692 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-05-02 20:13:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:13:47,694 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 20:13:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:13:47,699 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:13:47,699 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 20:13:47,700 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:13:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 20:13:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 20:13:47,721 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 20:13:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 20:13:47,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2021-05-02 20:13:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:13:47,723 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 20:13:47,724 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 20:13:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 20:13:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 20:13:47,725 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:47,725 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 20:13:47,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:13:47,726 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:47,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1131459816, now seen corresponding path program 1 times [2021-05-02 20:13:47,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:47,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518089157] [2021-05-02 20:13:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:47,742 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:13:47,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941629742] [2021-05-02 20:13:47,742 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 20:13:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:47,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:13:47,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:13:47,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:47,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,003 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 20:13:48,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:13:48,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518089157] [2021-05-02 20:13:48,004 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:13:48,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941629742] [2021-05-02 20:13:48,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941629742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:13:48,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:13:48,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:13:48,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842952479] [2021-05-02 20:13:48,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:13:48,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:13:48,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:13:48,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:13:48,007 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 20:13:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:13:48,217 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-02 20:13:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:13:48,217 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 20:13:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:13:48,218 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:13:48,219 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 20:13:48,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:13:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 20:13:48,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 20:13:48,223 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 20:13:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-05-02 20:13:48,224 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 35 [2021-05-02 20:13:48,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:13:48,225 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-05-02 20:13:48,225 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 20:13:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-05-02 20:13:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 20:13:48,226 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:48,226 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 20:13:48,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:13:48,446 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:48,446 INFO L82 PathProgramCache]: Analyzing trace with hash -305154333, now seen corresponding path program 1 times [2021-05-02 20:13:48,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:48,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018450457] [2021-05-02 20:13:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:48,458 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:13:48,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195299347] [2021-05-02 20:13:48,458 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 20:13:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:48,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:13:48,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:13:48,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:48,703 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 20:13:48,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:13:48,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018450457] [2021-05-02 20:13:48,703 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:13:48,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195299347] [2021-05-02 20:13:48,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195299347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:13:48,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:13:48,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:13:48,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309111317] [2021-05-02 20:13:48,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:13:48,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:13:48,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:13:48,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:13:48,705 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 20:13:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:13:48,872 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-05-02 20:13:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:13:48,873 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 20:13:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:13:48,874 INFO L225 Difference]: With dead ends: 55 [2021-05-02 20:13:48,874 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 20:13:48,874 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:13:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 20:13:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-05-02 20:13:48,877 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 20:13:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-05-02 20:13:48,878 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 37 [2021-05-02 20:13:48,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:13:48,878 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-05-02 20:13:48,878 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 20:13:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-05-02 20:13:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 20:13:48,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:48,879 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 20:13:49,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:13:49,098 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1858557484, now seen corresponding path program 1 times [2021-05-02 20:13:49,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:49,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618975825] [2021-05-02 20:13:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:49,114 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:13:49,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655660578] [2021-05-02 20:13:49,114 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 20:13:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:49,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 20:13:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:13:49,298 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 20:13:49,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:13:49,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618975825] [2021-05-02 20:13:49,298 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:13:49,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655660578] [2021-05-02 20:13:49,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655660578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:13:49,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:13:49,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:13:49,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273855012] [2021-05-02 20:13:49,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:13:49,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:13:49,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:13:49,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:13:49,300 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 20:13:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:13:49,315 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2021-05-02 20:13:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:13:49,316 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 20:13:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:13:49,317 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:13:49,317 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 20:13:49,317 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:13:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 20:13:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 20:13:49,320 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 20:13:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 20:13:49,321 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 43 [2021-05-02 20:13:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:13:49,321 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 20:13:49,321 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 20:13:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 20:13:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 20:13:49,322 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:49,322 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 20:13:49,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:13:49,537 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:49,538 INFO L82 PathProgramCache]: Analyzing trace with hash 270500047, now seen corresponding path program 1 times [2021-05-02 20:13:49,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:49,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567151299] [2021-05-02 20:13:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:49,547 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:13:49,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759681640] [2021-05-02 20:13:49,547 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 20:13:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:13:49,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 20:13:49,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:13:49,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:49,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:50,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:13:50,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:13:50,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567151299] [2021-05-02 20:13:50,087 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:13:50,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759681640] [2021-05-02 20:13:50,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759681640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:13:50,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:13:50,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:13:50,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216297236] [2021-05-02 20:13:50,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:13:50,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:13:50,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:13:50,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:13:50,089 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 20:13:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:13:50,413 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-05-02 20:13:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 20:13:50,413 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 20:13:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:13:50,414 INFO L225 Difference]: With dead ends: 50 [2021-05-02 20:13:50,414 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 20:13:50,414 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 311.6ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-05-02 20:13:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 20:13:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-05-02 20:13:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 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 20:13:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-05-02 20:13:50,418 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 45 [2021-05-02 20:13:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:13:50,418 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-05-02 20:13:50,418 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 20:13:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-05-02 20:13:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 20:13:50,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:50,419 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 20:13:50,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:13:50,624 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash -575889733, now seen corresponding path program 2 times [2021-05-02 20:13:50,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:50,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677715498] [2021-05-02 20:13:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:50,643 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:13:50,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85220990] [2021-05-02 20:13:50,643 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 20:13:50,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:13:50,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:13:50,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 20:13:50,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:13:50,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:50,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:50,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:50,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:51,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:51,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:51,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:51,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 20:13:53,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:13:53,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677715498] [2021-05-02 20:13:53,751 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:13:53,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85220990] [2021-05-02 20:13:53,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85220990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:13:53,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:13:53,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:13:53,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661990629] [2021-05-02 20:13:53,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:13:53,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:13:53,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:13:53,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:13:53,753 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:13:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:13:56,081 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2021-05-02 20:13:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:13:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 53 [2021-05-02 20:13:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:13:56,082 INFO L225 Difference]: With dead ends: 60 [2021-05-02 20:13:56,082 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 20:13:56,082 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 283.5ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:13:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 20:13:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-05-02 20:13:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 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 20:13:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-05-02 20:13:56,085 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 53 [2021-05-02 20:13:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:13:56,085 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-05-02 20:13:56,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:13:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-05-02 20:13:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 20:13:56,086 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:13:56,086 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 20:13:56,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:13:56,287 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:13:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:13:56,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1631897610, now seen corresponding path program 3 times [2021-05-02 20:13:56,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:13:56,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190418060] [2021-05-02 20:13:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:13:56,304 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:13:56,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699129112] [2021-05-02 20:13:56,304 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 20:13:57,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:13:57,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:13:57,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 20:13:57,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:13:57,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:57,929 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-02 20:13:58,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:58,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:58,928 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 20:13:59,420 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-05-02 20:13:59,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:13:59,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:14:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:14:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:14:03,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:14:03,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:14:03,450 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 551 DAG size of output: 555 [2021-05-02 20:14:03,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:14:03,696 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 571 [2021-05-02 20:14:03,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:17:35,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:17:35,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190418060] [2021-05-02 20:17:35,150 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:17:35,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699129112] [2021-05-02 20:17:35,150 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-02 20:17:35,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:17:35,355 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 20:17:35,358 INFO L168 Benchmark]: Toolchain (without parser) took 228593.13 ms. Allocated memory was 190.8 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 155.3 MB in the beginning and 6.2 GB in the end (delta: -6.0 GB). Peak memory consumption was 4.1 GB. Max. memory is 8.0 GB. [2021-05-02 20:17:35,358 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 190.8 MB. Free memory is still 171.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:17:35,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.21 ms. Allocated memory is still 190.8 MB. Free memory was 155.0 MB in the beginning and 173.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2021-05-02 20:17:35,358 INFO L168 Benchmark]: Boogie Preprocessor took 27.07 ms. Allocated memory is still 190.8 MB. Free memory was 173.1 MB in the beginning and 171.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:17:35,358 INFO L168 Benchmark]: RCFGBuilder took 347.99 ms. Allocated memory is still 190.8 MB. Free memory was 171.5 MB in the beginning and 155.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 20:17:35,358 INFO L168 Benchmark]: IcfgTransformer took 31.63 ms. Allocated memory is still 190.8 MB. Free memory was 155.3 MB in the beginning and 154.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:17:35,358 INFO L168 Benchmark]: TraceAbstraction took 227988.35 ms. Allocated memory was 190.8 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 153.7 MB in the beginning and 6.2 GB in the end (delta: -6.0 GB). Peak memory consumption was 4.1 GB. Max. memory is 8.0 GB. [2021-05-02 20:17:35,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 190.8 MB. Free memory is still 171.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 191.21 ms. Allocated memory is still 190.8 MB. Free memory was 155.0 MB in the beginning and 173.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.07 ms. Allocated memory is still 190.8 MB. Free memory was 173.1 MB in the beginning and 171.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 347.99 ms. Allocated memory is still 190.8 MB. Free memory was 171.5 MB in the beginning and 155.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.63 ms. Allocated memory is still 190.8 MB. Free memory was 155.3 MB in the beginning and 154.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 227988.35 ms. Allocated memory was 190.8 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 153.7 MB in the beginning and 6.2 GB in the end (delta: -6.0 GB). Peak memory consumption was 4.1 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...