/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/bresenham-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 07:10:43,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 07:10:43,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 07:10:43,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 07:10:43,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 07:10:43,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 07:10:43,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 07:10:43,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 07:10:43,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 07:10:43,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 07:10:43,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 07:10:43,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 07:10:43,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 07:10:43,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 07:10:43,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 07:10:43,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 07:10:43,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 07:10:43,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 07:10:43,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 07:10:43,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 07:10:43,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 07:10:43,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 07:10:43,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 07:10:43,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 07:10:43,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 07:10:43,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 07:10:43,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 07:10:43,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 07:10:43,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 07:10:43,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 07:10:43,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 07:10:43,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 07:10:43,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 07:10:43,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 07:10:43,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 07:10:43,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 07:10:43,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 07:10:43,222 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 07:10:43,222 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 07:10:43,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 07:10:43,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 07:10:43,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 07:10:43,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 07:10:43,507 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 07:10:43,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound20.c [2021-05-06 07:10:43,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8310452/8863c018d62b40b78e384e06786afa87/FLAGfd101d430 [2021-05-06 07:10:43,999 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 07:10:43,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound20.c [2021-05-06 07:10:44,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8310452/8863c018d62b40b78e384e06786afa87/FLAGfd101d430 [2021-05-06 07:10:44,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8310452/8863c018d62b40b78e384e06786afa87 [2021-05-06 07:10:44,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 07:10:44,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 07:10:44,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 07:10:44,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 07:10:44,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 07:10:44,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd3b91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44, skipping insertion in model container [2021-05-06 07:10:44,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 07:10:44,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 07:10:44,160 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/bresenham-ll_valuebound20.c[597,610] [2021-05-06 07:10:44,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 07:10:44,185 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 07:10:44,233 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/bresenham-ll_valuebound20.c[597,610] [2021-05-06 07:10:44,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 07:10:44,264 INFO L208 MainTranslator]: Completed translation [2021-05-06 07:10:44,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44 WrapperNode [2021-05-06 07:10:44,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 07:10:44,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 07:10:44,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 07:10:44,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 07:10:44,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 07:10:44,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 07:10:44,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 07:10:44,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 07:10:44,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 07:10:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 07:10:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 07:10:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 07:10:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 07:10:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 07:10:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 07:10:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 07:10:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 07:10:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 07:10:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 07:10:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 07:10:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 07:10:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 07:10:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 07:10:44,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 07:10:44,582 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 07:10:44,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 07:10:44 BoogieIcfgContainer [2021-05-06 07:10:44,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 07:10:44,583 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 07:10:44,583 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 07:10:44,584 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 07:10:44,586 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 07:10:44" (1/1) ... [2021-05-06 07:10:44,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 07:10:44 BasicIcfg [2021-05-06 07:10:44,611 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 07:10:44,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 07:10:44,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 07:10:44,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 07:10:44,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 07:10:44" (1/4) ... [2021-05-06 07:10:44,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef0c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 07:10:44, skipping insertion in model container [2021-05-06 07:10:44,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:10:44" (2/4) ... [2021-05-06 07:10:44,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef0c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 07:10:44, skipping insertion in model container [2021-05-06 07:10:44,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 07:10:44" (3/4) ... [2021-05-06 07:10:44,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef0c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 07:10:44, skipping insertion in model container [2021-05-06 07:10:44,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 07:10:44" (4/4) ... [2021-05-06 07:10:44,616 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound20.cJordan [2021-05-06 07:10:44,619 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 07:10:44,638 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 07:10:44,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 07:10:44,677 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 07:10:44,678 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 07:10:44,678 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 07:10:44,678 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 07:10:44,678 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 07:10:44,678 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 07:10:44,678 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 07:10:44,678 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 07:10:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 07:10:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 07:10:44,706 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:10:44,706 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:10:44,707 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:10:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:10:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2021-05-06 07:10:44,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:10:44,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438165128] [2021-05-06 07:10:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:10:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 07:10:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 07:10:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 07:10:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 07:10:44,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:10:44,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438165128] [2021-05-06 07:10:44,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438165128] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 07:10:44,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 07:10:44,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 07:10:44,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796364767] [2021-05-06 07:10:44,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 07:10:44,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:10:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 07:10:44,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 07:10:44,960 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 07:10:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:10:45,026 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-06 07:10:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 07:10:45,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 07:10:45,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:10:45,032 INFO L225 Difference]: With dead ends: 32 [2021-05-06 07:10:45,032 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 07:10:45,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 07:10:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 07:10:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 07:10:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 07:10:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-06 07:10:45,057 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2021-05-06 07:10:45,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:10:45,058 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-06 07:10:45,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 07:10:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-06 07:10:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 07:10:45,059 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:10:45,059 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:10:45,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 07:10:45,060 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:10:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:10:45,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2021-05-06 07:10:45,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:10:45,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878939257] [2021-05-06 07:10:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:10:45,090 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:10:45,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584510568] [2021-05-06 07:10:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:45,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 07:10:45,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:10:45,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 07:10:45,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:10:45,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878939257] [2021-05-06 07:10:45,272 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:10:45,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584510568] [2021-05-06 07:10:45,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584510568] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 07:10:45,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 07:10:45,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 07:10:45,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005555330] [2021-05-06 07:10:45,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 07:10:45,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:10:45,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 07:10:45,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 07:10:45,274 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 07:10:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:10:45,327 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-05-06 07:10:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 07:10:45,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-05-06 07:10:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:10:45,329 INFO L225 Difference]: With dead ends: 37 [2021-05-06 07:10:45,329 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 07:10:45,330 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-06 07:10:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 07:10:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-06 07:10:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 07:10:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-05-06 07:10:45,334 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2021-05-06 07:10:45,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:10:45,335 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-05-06 07:10:45,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 07:10:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-05-06 07:10:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 07:10:45,335 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:10:45,336 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-06 07:10:45,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 07:10:45,554 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:10:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:10:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2021-05-06 07:10:45,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:10:45,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477862835] [2021-05-06 07:10:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:10:45,563 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:10:45,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266640071] [2021-05-06 07:10:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:45,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 07:10:45,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:10:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 07:10:45,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:10:45,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477862835] [2021-05-06 07:10:45,885 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:10:45,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266640071] [2021-05-06 07:10:45,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266640071] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:10:45,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:10:45,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 07:10:45,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085648561] [2021-05-06 07:10:45,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 07:10:45,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:10:45,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 07:10:45,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-06 07:10:45,888 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 07:10:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:10:46,033 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-05-06 07:10:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-06 07:10:46,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2021-05-06 07:10:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:10:46,035 INFO L225 Difference]: With dead ends: 46 [2021-05-06 07:10:46,035 INFO L226 Difference]: Without dead ends: 44 [2021-05-06 07:10:46,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-05-06 07:10:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-06 07:10:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-05-06 07:10:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 07:10:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-05-06 07:10:46,040 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 32 [2021-05-06 07:10:46,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:10:46,041 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-05-06 07:10:46,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 07:10:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-05-06 07:10:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 07:10:46,041 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:10:46,042 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-06 07:10:46,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:46,257 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:10:46,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:10:46,257 INFO L82 PathProgramCache]: Analyzing trace with hash 241495552, now seen corresponding path program 1 times [2021-05-06 07:10:46,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:10:46,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945283277] [2021-05-06 07:10:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:10:46,266 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:10:46,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801465940] [2021-05-06 07:10:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:46,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 07:10:46,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:10:46,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:46,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 07:10:46,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:10:46,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945283277] [2021-05-06 07:10:46,425 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:10:46,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801465940] [2021-05-06 07:10:46,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801465940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:10:46,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:10:46,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 07:10:46,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394123792] [2021-05-06 07:10:46,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 07:10:46,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:10:46,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 07:10:46,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-06 07:10:46,427 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 07:10:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:10:46,517 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-05-06 07:10:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 07:10:46,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2021-05-06 07:10:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:10:46,518 INFO L225 Difference]: With dead ends: 54 [2021-05-06 07:10:46,518 INFO L226 Difference]: Without dead ends: 54 [2021-05-06 07:10:46,518 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-05-06 07:10:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-06 07:10:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2021-05-06 07:10:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 07:10:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-06 07:10:46,522 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2021-05-06 07:10:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:10:46,523 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-06 07:10:46,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 07:10:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-06 07:10:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 07:10:46,524 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:10:46,524 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:10:46,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:46,737 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:10:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:10:46,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2021-05-06 07:10:46,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:10:46,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281744247] [2021-05-06 07:10:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:10:46,752 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:10:46,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180196368] [2021-05-06 07:10:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:10:46,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 07:10:46,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:10:46,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:46,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 07:10:47,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:10:47,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281744247] [2021-05-06 07:10:47,089 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:10:47,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180196368] [2021-05-06 07:10:47,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180196368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:10:47,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:10:47,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-06 07:10:47,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118609061] [2021-05-06 07:10:47,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 07:10:47,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:10:47,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 07:10:47,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-05-06 07:10:47,095 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2021-05-06 07:10:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:10:47,307 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-05-06 07:10:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 07:10:47,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 39 [2021-05-06 07:10:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:10:47,308 INFO L225 Difference]: With dead ends: 59 [2021-05-06 07:10:47,308 INFO L226 Difference]: Without dead ends: 53 [2021-05-06 07:10:47,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 200.8ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-05-06 07:10:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-06 07:10:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2021-05-06 07:10:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 07:10:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-05-06 07:10:47,312 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 39 [2021-05-06 07:10:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:10:47,312 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-05-06 07:10:47,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2021-05-06 07:10:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-05-06 07:10:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 07:10:47,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:10:47,313 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:10:47,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:47,534 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:10:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:10:47,535 INFO L82 PathProgramCache]: Analyzing trace with hash 718222219, now seen corresponding path program 2 times [2021-05-06 07:10:47,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:10:47,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016239213] [2021-05-06 07:10:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:10:47,543 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:10:47,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829693046] [2021-05-06 07:10:47,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:10:47,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 07:10:47,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 07:10:47,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 07:10:47,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:10:47,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:10:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-06 07:10:47,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:10:47,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016239213] [2021-05-06 07:10:47,973 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:10:47,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829693046] [2021-05-06 07:10:47,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829693046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:10:47,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:10:47,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-06 07:10:47,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71097903] [2021-05-06 07:10:47,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 07:10:47,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:10:47,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 07:10:47,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-06 07:10:47,974 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 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) [2021-05-06 07:11:17,410 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-06 07:11:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:11:21,310 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-05-06 07:11:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 07:11:21,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 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 41 [2021-05-06 07:11:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:11:21,311 INFO L225 Difference]: With dead ends: 54 [2021-05-06 07:11:21,311 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 07:11:21,311 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 648.1ms TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-05-06 07:11:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 07:11:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 07:11:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 07:11:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 07:11:21,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-05-06 07:11:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:11:21,312 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 07:11:21,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 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) [2021-05-06 07:11:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 07:11:21,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 07:11:21,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-06 07:11:21,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 07:11:21 BasicIcfg [2021-05-06 07:11:21,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 07:11:21,516 INFO L168 Benchmark]: Toolchain (without parser) took 37490.54 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 138.2 MB in the beginning and 101.0 MB in the end (delta: 37.2 MB). Peak memory consumption was 71.7 MB. Max. memory is 8.0 GB. [2021-05-06 07:11:21,516 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 172.0 MB. Free memory was 155.0 MB in the beginning and 154.9 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 07:11:21,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.23 ms. Allocated memory is still 172.0 MB. Free memory was 138.1 MB in the beginning and 155.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 07:11:21,517 INFO L168 Benchmark]: Boogie Preprocessor took 36.89 ms. Allocated memory is still 172.0 MB. Free memory was 155.2 MB in the beginning and 153.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 07:11:21,517 INFO L168 Benchmark]: RCFGBuilder took 279.72 ms. Allocated memory is still 172.0 MB. Free memory was 153.6 MB in the beginning and 138.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 07:11:21,517 INFO L168 Benchmark]: IcfgTransformer took 28.14 ms. Allocated memory is still 172.0 MB. Free memory was 138.3 MB in the beginning and 136.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 07:11:21,517 INFO L168 Benchmark]: TraceAbstraction took 36903.65 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 136.5 MB in the beginning and 101.0 MB in the end (delta: 35.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. [2021-05-06 07:11:21,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 172.0 MB. Free memory was 155.0 MB in the beginning and 154.9 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 236.23 ms. Allocated memory is still 172.0 MB. Free memory was 138.1 MB in the beginning and 155.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.89 ms. Allocated memory is still 172.0 MB. Free memory was 155.2 MB in the beginning and 153.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 279.72 ms. Allocated memory is still 172.0 MB. Free memory was 153.6 MB in the beginning and 138.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 28.14 ms. Allocated memory is still 172.0 MB. Free memory was 138.3 MB in the beginning and 136.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 36903.65 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 136.5 MB in the beginning and 101.0 MB in the end (delta: 35.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36837.3ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 25.5ms, AutomataDifference: 33939.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 145 SDtfs, 100 SDslu, 727 SDs, 0 SdLazy, 832 SolverSat, 39 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 33183.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1089.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 66.5ms SsaConstructionTime, 147.4ms SatisfiabilityAnalysisTime, 1201.5ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 936 SizeOfPredicates, 23 NumberOfNonLiveVariables, 703 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 42/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...