/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:57:08,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:57:08,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:57:08,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:57:08,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:57:08,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:57:08,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:57:08,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:57:08,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:57:08,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:57:08,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:57:08,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:57:08,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:57:08,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:57:08,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:57:08,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:57:08,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:57:08,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:57:08,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:57:08,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:57:08,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:57:08,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:57:08,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:57:08,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:57:08,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:57:08,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:57:08,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:57:08,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:57:08,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:57:08,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:57:08,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:57:08,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:57:08,501 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:57:08,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:57:08,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:57:08,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:57:08,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:57:08,504 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:57:08,504 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:57:08,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:57:08,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:57:08,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:57:08,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:57:08,744 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:57:08,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c [2021-05-02 20:57:08,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9477d507/2fc7793616eb4fffb725455550205563/FLAG5bd9eff0f [2021-05-02 20:57:09,268 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:57:09,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c [2021-05-02 20:57:09,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9477d507/2fc7793616eb4fffb725455550205563/FLAG5bd9eff0f [2021-05-02 20:57:09,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9477d507/2fc7793616eb4fffb725455550205563 [2021-05-02 20:57:09,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:57:09,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:57:09,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:57:09,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:57:09,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:57:09,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419a95e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09, skipping insertion in model container [2021-05-02 20:57:09,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:57:09,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:57:09,430 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c[545,558] [2021-05-02 20:57:09,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:57:09,453 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:57:09,462 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c[545,558] [2021-05-02 20:57:09,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:57:09,484 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:57:09,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09 WrapperNode [2021-05-02 20:57:09,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:57:09,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:57:09,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:57:09,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:57:09,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:57:09,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:57:09,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:57:09,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:57:09,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:57:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:57:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:57:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:57:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:57:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:57:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:57:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:57:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:57:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:57:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:57:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:57:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:57:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:57:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:57:09,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:57:09,812 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:57:09,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:57:09 BoogieIcfgContainer [2021-05-02 20:57:09,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:57:09,814 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:57:09,814 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:57:09,814 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:57:09,816 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:57:09" (1/1) ... [2021-05-02 20:57:09,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:57:09 BasicIcfg [2021-05-02 20:57:09,838 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:57:09,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:57:09,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:57:09,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:57:09,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:57:09" (1/4) ... [2021-05-02 20:57:09,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a2120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:57:09, skipping insertion in model container [2021-05-02 20:57:09,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:57:09" (2/4) ... [2021-05-02 20:57:09,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a2120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:57:09, skipping insertion in model container [2021-05-02 20:57:09,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:57:09" (3/4) ... [2021-05-02 20:57:09,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a2120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:57:09, skipping insertion in model container [2021-05-02 20:57:09,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:57:09" (4/4) ... [2021-05-02 20:57:09,849 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound50.cJordan [2021-05-02 20:57:09,852 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:57:09,855 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:57:09,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:57:09,888 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:57:09,888 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:57:09,888 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:57:09,888 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:57:09,888 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:57:09,888 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:57:09,888 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:57:09,888 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:57:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:57:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:57:09,917 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:09,917 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:09,918 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:09,922 INFO L82 PathProgramCache]: Analyzing trace with hash 79654685, now seen corresponding path program 1 times [2021-05-02 20:57:09,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:09,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835853166] [2021-05-02 20:57:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:57:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:57:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:10,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:10,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835853166] [2021-05-02 20:57:10,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835853166] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:10,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:10,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:57:10,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808091326] [2021-05-02 20:57:10,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:57:10,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:57:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:57:10,121 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:57:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:10,234 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-02 20:57:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:57:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 20:57:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:10,240 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:57:10,240 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 20:57:10,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:57:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 20:57:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-02 20:57:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-05-02 20:57:10,262 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2021-05-02 20:57:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:10,262 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-05-02 20:57:10,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:57:10,262 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-05-02 20:57:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:57:10,263 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:10,263 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:10,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:57:10,263 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash -85369733, now seen corresponding path program 1 times [2021-05-02 20:57:10,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:10,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105999690] [2021-05-02 20:57:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:57:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:57:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:10,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:10,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105999690] [2021-05-02 20:57:10,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105999690] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:10,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:10,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:57:10,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514052787] [2021-05-02 20:57:10,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:10,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:10,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:10,355 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:57:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:10,592 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-05-02 20:57:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:10,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 20:57:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:10,594 INFO L225 Difference]: With dead ends: 45 [2021-05-02 20:57:10,595 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 20:57:10,595 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:57:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 20:57:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-05-02 20:57:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-05-02 20:57:10,601 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 18 [2021-05-02 20:57:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:10,601 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-05-02 20:57:10,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:57:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-05-02 20:57:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 20:57:10,601 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:10,602 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:10,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 20:57:10,602 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:10,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1527809342, now seen corresponding path program 1 times [2021-05-02 20:57:10,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:10,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657585155] [2021-05-02 20:57:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:10,611 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:10,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048631374] [2021-05-02 20:57:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:10,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:57:10,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:10,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:10,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:10,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657585155] [2021-05-02 20:57:10,825 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:10,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048631374] [2021-05-02 20:57:10,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048631374] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:10,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:10,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 20:57:10,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963383135] [2021-05-02 20:57:10,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 20:57:10,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 20:57:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:57:10,827 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:57:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:10,835 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-05-02 20:57:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 20:57:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 20:57:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:10,836 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:57:10,836 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 20:57:10,836 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:57:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 20:57:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 20:57:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-05-02 20:57:10,840 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 20 [2021-05-02 20:57:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:10,840 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-05-02 20:57:10,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:57:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-05-02 20:57:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 20:57:10,840 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:10,840 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:11,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 20:57:11,057 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:11,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2128444854, now seen corresponding path program 1 times [2021-05-02 20:57:11,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:11,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118445314] [2021-05-02 20:57:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:57:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:57:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-02 20:57:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:57:11,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:11,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118445314] [2021-05-02 20:57:11,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118445314] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:11,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:11,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:57:11,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936683290] [2021-05-02 20:57:11,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:11,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:11,146 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:57:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:11,357 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-05-02 20:57:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:11,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 20:57:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:11,360 INFO L225 Difference]: With dead ends: 50 [2021-05-02 20:57:11,360 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 20:57:11,360 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:57:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 20:57:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-05-02 20:57:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:57:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 20:57:11,372 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 23 [2021-05-02 20:57:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:11,372 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 20:57:11,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:57:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 20:57:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:57:11,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:11,374 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:11,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 20:57:11,374 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 135546551, now seen corresponding path program 1 times [2021-05-02 20:57:11,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:11,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272279236] [2021-05-02 20:57:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:11,402 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:11,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918859408] [2021-05-02 20:57:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:11,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:57:11,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:57:11,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:11,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272279236] [2021-05-02 20:57:11,565 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:11,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918859408] [2021-05-02 20:57:11,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918859408] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:11,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:11,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 20:57:11,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596507518] [2021-05-02 20:57:11,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:57:11,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:11,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:57:11,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:57:11,566 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:57:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:11,653 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-05-02 20:57:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:11,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-02 20:57:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:11,659 INFO L225 Difference]: With dead ends: 57 [2021-05-02 20:57:11,659 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 20:57:11,659 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:57:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 20:57:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 20:57:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:57:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2021-05-02 20:57:11,670 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 28 [2021-05-02 20:57:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:11,670 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2021-05-02 20:57:11,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:57:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2021-05-02 20:57:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:57:11,671 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:11,671 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:11,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:11,885 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:11,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1016025214, now seen corresponding path program 1 times [2021-05-02 20:57:11,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:11,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485800426] [2021-05-02 20:57:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:11,899 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:11,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825288253] [2021-05-02 20:57:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:11,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:57:11,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:11,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:57:12,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:12,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485800426] [2021-05-02 20:57:12,002 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:12,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825288253] [2021-05-02 20:57:12,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825288253] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:12,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:12,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:57:12,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661506575] [2021-05-02 20:57:12,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:57:12,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:12,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:57:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:57:12,003 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:12,038 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-05-02 20:57:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:57:12,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 20:57:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:12,039 INFO L225 Difference]: With dead ends: 69 [2021-05-02 20:57:12,039 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 20:57:12,040 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:57:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 20:57:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 20:57:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:57:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-05-02 20:57:12,043 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 36 [2021-05-02 20:57:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:12,043 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-05-02 20:57:12,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-05-02 20:57:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:57:12,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:12,044 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:12,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:12,261 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1017127481, now seen corresponding path program 1 times [2021-05-02 20:57:12,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:12,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26761852] [2021-05-02 20:57:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:12,269 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:12,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193087464] [2021-05-02 20:57:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:57:12,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:57:12,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:12,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26761852] [2021-05-02 20:57:12,472 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:12,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193087464] [2021-05-02 20:57:12,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193087464] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:57:12,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:57:12,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 20:57:12,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995403283] [2021-05-02 20:57:12,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:57:12,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:12,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:57:12,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:57:12,473 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:57:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:12,589 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-05-02 20:57:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:57:12,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-05-02 20:57:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:12,590 INFO L225 Difference]: With dead ends: 72 [2021-05-02 20:57:12,590 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 20:57:12,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:57:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 20:57:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 20:57:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:57:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2021-05-02 20:57:12,594 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 36 [2021-05-02 20:57:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:12,594 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2021-05-02 20:57:12,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:57:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2021-05-02 20:57:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 20:57:12,594 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:12,595 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:12,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:12,801 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:12,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1880362404, now seen corresponding path program 1 times [2021-05-02 20:57:12,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:12,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996082478] [2021-05-02 20:57:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:12,807 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:12,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578263313] [2021-05-02 20:57:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:12,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:57:12,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:57:12,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:12,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996082478] [2021-05-02 20:57:12,915 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:12,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578263313] [2021-05-02 20:57:12,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578263313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:12,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:12,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 20:57:12,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675565695] [2021-05-02 20:57:12,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:57:12,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:12,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:57:12,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:57:12,916 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:12,940 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-05-02 20:57:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:57:12,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-05-02 20:57:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:12,940 INFO L225 Difference]: With dead ends: 60 [2021-05-02 20:57:12,941 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 20:57:12,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 20:57:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 20:57:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:57:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2021-05-02 20:57:12,943 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 38 [2021-05-02 20:57:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:12,943 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2021-05-02 20:57:12,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:57:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2021-05-02 20:57:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 20:57:12,944 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:12,944 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:13,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,149 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1525733273, now seen corresponding path program 1 times [2021-05-02 20:57:13,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:13,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165924840] [2021-05-02 20:57:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:13,155 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:13,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337388113] [2021-05-02 20:57:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:13,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:57:13,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-02 20:57:13,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:13,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165924840] [2021-05-02 20:57:13,449 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:13,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337388113] [2021-05-02 20:57:13,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337388113] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:13,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:13,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:57:13,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176949546] [2021-05-02 20:57:13,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:57:13,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:13,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:57:13,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:57:13,450 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-02 20:57:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:13,614 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2021-05-02 20:57:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:57:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2021-05-02 20:57:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:13,620 INFO L225 Difference]: With dead ends: 75 [2021-05-02 20:57:13,620 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 20:57:13,620 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:57:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 20:57:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-05-02 20:57:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 46 states have internal predecessors, (53), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 20:57:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2021-05-02 20:57:13,625 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 46 [2021-05-02 20:57:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:13,625 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2021-05-02 20:57:13,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-02 20:57:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2021-05-02 20:57:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:57:13,626 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:13,626 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:13,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,830 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1447419744, now seen corresponding path program 1 times [2021-05-02 20:57:13,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:13,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296754458] [2021-05-02 20:57:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:13,836 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:13,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008868999] [2021-05-02 20:57:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:13,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:57:13,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:13,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:57:13,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:13,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296754458] [2021-05-02 20:57:13,996 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:13,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008868999] [2021-05-02 20:57:13,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008868999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:13,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:13,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:57:13,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726426984] [2021-05-02 20:57:13,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:13,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:13,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:13,997 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:57:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:14,033 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-05-02 20:57:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:57:14,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2021-05-02 20:57:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:14,035 INFO L225 Difference]: With dead ends: 86 [2021-05-02 20:57:14,035 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 20:57:14,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 20:57:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-05-02 20:57:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 55 states have internal predecessors, (61), 18 states have call successors, (18), 13 states have call predecessors, (18), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 20:57:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-05-02 20:57:14,049 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 54 [2021-05-02 20:57:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:14,050 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-05-02 20:57:14,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:57:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-05-02 20:57:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:57:14,051 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:14,051 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:14,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 20:57:14,261 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:14,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1448522011, now seen corresponding path program 1 times [2021-05-02 20:57:14,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:14,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316349344] [2021-05-02 20:57:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:14,268 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:14,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652214837] [2021-05-02 20:57:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:14,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:57:14,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 20:57:14,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:14,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316349344] [2021-05-02 20:57:14,504 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:14,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652214837] [2021-05-02 20:57:14,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652214837] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:14,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:14,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:57:14,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883383727] [2021-05-02 20:57:14,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:57:14,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:14,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:57:14,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:57:14,505 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-02 20:57:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:16,653 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-05-02 20:57:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:57:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 54 [2021-05-02 20:57:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:16,654 INFO L225 Difference]: With dead ends: 97 [2021-05-02 20:57:16,655 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 20:57:16,655 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:57:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 20:57:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-02 20:57:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 63 states have internal predecessors, (71), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:57:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-05-02 20:57:16,658 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 54 [2021-05-02 20:57:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:16,658 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-05-02 20:57:16,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-02 20:57:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-05-02 20:57:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 20:57:16,659 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:16,659 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:16,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 20:57:16,862 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:16,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1294763379, now seen corresponding path program 1 times [2021-05-02 20:57:16,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:16,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80977539] [2021-05-02 20:57:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:16,869 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:16,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961085540] [2021-05-02 20:57:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:16,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:57:16,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:16,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:16,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 36 proven. 46 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 20:57:17,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:17,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80977539] [2021-05-02 20:57:17,026 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:17,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961085540] [2021-05-02 20:57:17,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961085540] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:17,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:17,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:57:17,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509087482] [2021-05-02 20:57:17,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:57:17,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:17,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:57:17,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:57:17,028 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:57:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:17,072 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-05-02 20:57:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:17,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 61 [2021-05-02 20:57:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:17,074 INFO L225 Difference]: With dead ends: 98 [2021-05-02 20:57:17,074 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 20:57:17,074 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:57:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 20:57:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 20:57:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 65 states have internal predecessors, (73), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:57:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2021-05-02 20:57:17,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 61 [2021-05-02 20:57:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:17,079 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2021-05-02 20:57:17,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:57:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2021-05-02 20:57:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 20:57:17,081 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:17,081 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:17,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:17,296 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1774996485, now seen corresponding path program 2 times [2021-05-02 20:57:17,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:17,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859657249] [2021-05-02 20:57:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:17,302 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:17,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370267492] [2021-05-02 20:57:17,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:17,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:57:17,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:57:17,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 20:57:17,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 43 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-05-02 20:57:17,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:17,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859657249] [2021-05-02 20:57:17,865 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:17,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370267492] [2021-05-02 20:57:17,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370267492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:17,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:17,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:57:17,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009249549] [2021-05-02 20:57:17,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:57:17,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:17,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:57:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:57:17,866 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 20:57:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:18,349 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2021-05-02 20:57:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:57:18,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2021-05-02 20:57:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:18,350 INFO L225 Difference]: With dead ends: 113 [2021-05-02 20:57:18,350 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 20:57:18,351 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:57:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 20:57:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2021-05-02 20:57:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 69 states have (on average 1.173913043478261) internal successors, (81), 72 states have internal predecessors, (81), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 20:57:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2021-05-02 20:57:18,355 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 64 [2021-05-02 20:57:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:18,355 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2021-05-02 20:57:18,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 20:57:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2021-05-02 20:57:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 20:57:18,356 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:18,357 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:18,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:18,561 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash 112143503, now seen corresponding path program 1 times [2021-05-02 20:57:18,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:18,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824508481] [2021-05-02 20:57:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:18,569 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:18,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809131736] [2021-05-02 20:57:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:18,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 20:57:18,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:18,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-05-02 20:57:18,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:57:18,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824508481] [2021-05-02 20:57:18,753 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:57:18,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809131736] [2021-05-02 20:57:18,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809131736] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:57:18,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:57:18,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:57:18,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110064317] [2021-05-02 20:57:18,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:57:18,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:57:18,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:57:18,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:57:18,754 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:57:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:57:18,816 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2021-05-02 20:57:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:57:18,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-05-02 20:57:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:57:18,817 INFO L225 Difference]: With dead ends: 133 [2021-05-02 20:57:18,817 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 20:57:18,817 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:57:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 20:57:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-02 20:57:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 89 states have internal predecessors, (99), 26 states have call successors, (26), 19 states have call predecessors, (26), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 20:57:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2021-05-02 20:57:18,820 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 68 [2021-05-02 20:57:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:57:18,821 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2021-05-02 20:57:18,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:57:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2021-05-02 20:57:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 20:57:18,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:57:18,822 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:57:19,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 20:57:19,029 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:57:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:57:19,029 INFO L82 PathProgramCache]: Analyzing trace with hash 113245770, now seen corresponding path program 1 times [2021-05-02 20:57:19,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:57:19,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001553227] [2021-05-02 20:57:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:57:19,035 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:57:19,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11949322] [2021-05-02 20:57:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:57:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:57:19,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 20:57:19,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:57:19,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:57:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:07:03,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:07:03,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001553227] [2021-05-02 21:07:03,693 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:07:03,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11949322] [2021-05-02 21:07:03,693 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-02 21:07:03,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 21:07:03,897 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NegativeArraySizeException: -1072721305 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:615) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:612) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-02 21:07:03,908 INFO L168 Benchmark]: Toolchain (without parser) took 594613.02 ms. Allocated memory was 203.4 MB in the beginning and 6.7 GB in the end (delta: 6.5 GB). Free memory was 169.3 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.8 GB. Max. memory is 8.0 GB. [2021-05-02 21:07:03,908 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 203.4 MB. Free memory is still 185.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 21:07:03,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.09 ms. Allocated memory is still 203.4 MB. Free memory was 169.1 MB in the beginning and 159.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:03,909 INFO L168 Benchmark]: Boogie Preprocessor took 49.29 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 186.2 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:03,910 INFO L168 Benchmark]: RCFGBuilder took 276.94 ms. Allocated memory is still 203.4 MB. Free memory was 186.2 MB in the beginning and 170.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:03,910 INFO L168 Benchmark]: IcfgTransformer took 24.27 ms. Allocated memory is still 203.4 MB. Free memory was 170.2 MB in the beginning and 168.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 21:07:03,924 INFO L168 Benchmark]: TraceAbstraction took 594068.56 ms. Allocated memory was 203.4 MB in the beginning and 6.7 GB in the end (delta: 6.5 GB). Free memory was 168.4 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.8 GB. Max. memory is 8.0 GB. [2021-05-02 21:07:03,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 203.4 MB. Free memory is still 185.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 186.09 ms. Allocated memory is still 203.4 MB. Free memory was 169.1 MB in the beginning and 159.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.29 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 186.2 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.94 ms. Allocated memory is still 203.4 MB. Free memory was 186.2 MB in the beginning and 170.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 24.27 ms. Allocated memory is still 203.4 MB. Free memory was 170.2 MB in the beginning and 168.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 594068.56 ms. Allocated memory was 203.4 MB in the beginning and 6.7 GB in the end (delta: 6.5 GB). Free memory was 168.4 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NegativeArraySizeException: -1072721305 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NegativeArraySizeException: -1072721305: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...